Exhibit 4.2

     THIS SECURITY HAS NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "ACT"),  OR UNDER ANY STATE  SECURITIES  LAWS,  IN RELIANCE  UPON
EXEMPTIONS FROM REGISTRATION FOR NON-PUBLIC OFFERINGS.  THIS SECURITY MAY NOT BE
SOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  UNDER THE ACT AND UNDER APPLICABLE
STATE  SECURITIES  LAWS OR UNLESS  THE  ISSUER  RECEIVES  AN  OPINION OF COUNSEL
REASONABLY SATISFACTORY TO IT THAT AN EXEMPTION FROM REGISTRATION IS AVAILABLE.

Issuance Date: May 24, 2001

                                FONAR CORPORATION

                                PURCHASE WARRANT

                    WARRANT ("WARRANT") TO PURCHASE SHARES OF
                    COMMON STOCK, $0.0001 PAR VALUE PER SHARE

     This is to certify  that,  for VALUE  RECEIVED,  THE TAIL WIND  FUND,  LTD.
("Warrantholder"),  is entitled to purchase,  subject to the  provisions of this
Warrant,  from Fonar  Corporation,  a  corporation  organized  under the laws of
Delaware ("Company"),  at any time after the date of the issuance hereof but not
later than 5:00 P.M.,  Eastern  time,  on the fifth  (5th)  anniversary  of such
issuance date ("Expiration  Date"),  659,501 shares ("Warrant Shares") of Common
Stock,  $0.0001 par value ("Common Stock"), of the Company, at an exercise price
per  share  equal to $1.801  (the  exercise  price in  effect  from time to time
hereafter being herein called the "Warrant Price"). The number of Warrant Shares
purchasable upon exercise of this Warrant and the Warrant Price shall be subject
to adjustment from time to time as described herein.

     This  Warrant  has  been  issued  pursuant  to the  terms  of the  Purchase
Agreement  ("Purchase  Agreement") dated on or about the date hereof between the
Company  and the  Warrantholder.  Capitalized  terms used herein and not defined
shall have the meaning specified in the Purchase Agreement.

Section 1.  Registration.  The Company shall maintain books for the transfer and
     registration of the Warrant.  Upon the initial issuance of the Warrant, the
     Company   shall  issue  and  register  the  Warrant  in  the  name  of  the
     Warrantholder.

Section 2. Transfers.  As provided herein,  this Warrant may be transferred only
     pursuant to a  registration  statement  filed under the  Securities  Act of
     1933,  as amended  ("Securities  Act") or an  exemption  from  registration
     thereunder.  Subject to such restrictions,  the Company shall transfer this
     Warrant from time to time,  upon the books to be  maintained by the Company
     for that purpose,  upon surrender hereof for transfer  properly endorsed or
     accompanied  by  appropriate   instructions  for  transfer  upon  any  such
     transfer,  and a new  Warrant  shall be  issued to the  transferee  and the
     surrendered Warrant shall be canceled by the Company.

Section 3.

(a)  Exercise of Warrant.  Subject to the provisions  hereof,  the Warrantholder
     may exercise  this Warrant in whole or in part at any time and from time to
     time after the date of  issuance  hereof  upon  surrender  of the  Warrant,
     together with delivery of the duly executed  Warrant exercise form attached
     hereto (the  "Exercise  Agreement")  (which may be by fax),  to the Company
     during normal business hours on any business day at the Company's principal
     executive  offices (or such other office or agency of the Company as it may
     designate by notice to the holder hereof),  and upon payment to the Company
     in cash,  by certified or official  bank check or by wire  transfer for the
     account  of the  Company  of the  Warrant  Price  for  the  Warrant  Shares
     specified in the Exercise Agreement.  The Warrant Shares so purchased shall
     be deemed to be issued to the holder hereof or such holder's  designee,  as
     the record owner of such shares, as of the close of business on the date on
     which the completed  Exercise  Agreement  shall have been  delivered to the
     Company (or such later date as may be specified in the Exercise Agreement).
     Certificates  for  the  Warrant  Shares  so  purchased,   representing  the
     aggregate  number of shares specified in the Exercise  Agreement,  shall be
     delivered to the holder  hereof  within a reasonable  time,  not  exceeding
     three (3) business  days,  after this Warrant shall have been so exercised.
     The  certificates  so delivered  shall be in such  denominations  as may be
     requested by the holder  hereof and shall be registered in the name of such
     holder or such other name as shall be  designated  by such holder.  If this
     Warrant shall have been exercised only in part,  then,  unless this Warrant
     has expired,  the Company  shall  (subject to Section  3(b) below),  at its
     expense,  at the time of  delivery  of such  certificates,  deliver  to the
     holder a new  Warrant  representing  the number of shares  with  respect to
     which this Warrant shall not then have been exercised.

(b)  Book-Entry. Notwithstanding anything to the contrary set forth herein, upon
     exercise  of any  portion  of this  Warrant  in  accordance  with the terms
     hereof,  the  Warrantholder  shall not be required to physically  surrender
     this  Warrant to the  Company  unless such  holder is  purchasing  the full
     amount of Warrant Shares represented by this Warrant. The Warrantholder and
     the Company shall maintain  records showing the number of Warrant Shares so
     purchased hereunder and the dates of such purchases or shall use such other
     method, reasonably satisfactory to the Warrantholder and the Company, so as
     not to require physical  surrender of this Warrant upon each such exercise.
     The Warrantholder and any assignee,  by acceptance of this Warrant or a new
     Warrant,  acknowledge  and agree that, by reason of the  provisions of this
     paragraph, following exercise of any portion of this Warrant, the number of
     Warrant  Shares which may be purchased upon exercise of this Warrant may be
     less than the number of Warrant Shares set forth on the face hereof.

Section 4. Compliance with the Securities Act of 1933.  Neither this Warrant nor
     the Common Stock issued upon exercise  hereof nor any other security issued
     or issuable  upon exercise of this Warrant may be offered or sold except as
     provided in this Warrant and in conformity with the Securities Act of 1933,
     as amended, and then only against receipt of an agreement of such person to
     whom  such  offer of sale is made to  comply  with the  provisions  of this
     Section 4 with respect to any resale or other disposition of such security.
     The  Company  may cause  the  legend  set  forth on the first  page of this
     Warrant to be set forth on each  Warrant or similar  legend on any security
     issued or issuable upon  exercise of this Warrant until the Warrant  Shares
     have been registered for resale under the Registration  Rights Agreement or
     until  Rule 144 is  available,  unless  counsel  for the  Company is of the
     opinion as to any such security that such legend is unnecessary.

Section 5. Payment of Taxes.  The Company will pay any  documentary  stamp taxes
     attributable  to the initial  issuance of Warrant Shares  issuable upon the
     exercise of the Warrant;  provided,  however, that the Company shall not be
     required  to pay any tax or taxes  which may be  payable  in respect of any
     transfer  involved in the  issuance or  delivery  of any  certificates  for
     Warrant Shares in a name other than that of the  registered  holder of this
     Warrant in respect of which such  shares are  issued.  The holder  shall be
     responsible  for income  taxes due under  federal or state law, if any such
     tax is due.

Section 6.  Mutilated  or  Missing  Warrants.  In case  this  Warrant  shall  be
     mutilated,  lost, stolen, or destroyed, the Company shall issue in exchange
     and substitution of and upon cancellation of the mutilated  Warrant,  or in
     lieu of and substitution for the Warrant lost,  stolen or destroyed,  a new
     Warrant  of like  tenor and for the  purchase  of a like  number of Warrant
     Shares,  but only upon receipt of evidence  reasonably  satisfactory to the
     Company of such loss, theft or destruction of the Warrant, and with respect
     to a lost, stolen or destroyed Warrant,  reasonable  indemnity or bond with
     respect thereto, if reasonably requested by the Company.

Section 7.  Reservation  of Common  Stock.  The Company  hereby  represents  and
     warrants  that  there  have been  reserved,  and the  Company  shall at all
     applicable  times keep reserved,  out of the authorized and unissued Common
     Stock,  a number of shares  sufficient  to provide for the  exercise of the
     rights of purchase  represented  by the Warrant in full (without  regard to
     any  restrictions  on  beneficial  ownership  contained  herein),  and  the
     transfer agent for the Common Stock,  including every  subsequent  transfer
     agent for the Common Stock or other shares of the  Company's  capital stock
     issuable  upon  the  exercise  of any of the  right of  purchase  aforesaid
     ("Transfer  Agent"),  shall be  irrevocably  authorized and directed at all
     times to reserve such number of  authorized  and unissued  shares of Common
     Stock as shall be requisite for such purpose.  The Company  agrees that all
     Warrant  Shares issued upon exercise of the Warrant in accordance  with its
     terms  shall  be,  at the time of  delivery  of the  certificates  for such
     Warrant  Shares,   duly   authorized,   validly  issued,   fully  paid  and
     non-assessable shares of Common Stock of the Company. The Company will keep
     a  conformed  copy of this  Warrant on file with its  Transfer  Agent.  The
     Company will supply from time to time the Transfer Agent with duly executed
     stock certificates required to honor the outstanding Warrant.

Section 8. Warrant Price.  The Warrant Price,  subject to adjustment as provided
     in Section 9, shall,  if payment is made in cash or by certified  check, be
     payable in lawful money of the United States of America.

Section 9.  Adjustments.  Subject and pursuant to the provisions of this Section
     9, the Warrant Price and number of Warrant  Shares  subject to this Warrant
     shall be subject to adjustment from time to time as set forth hereinafter.

(a)  If the Company or any of its subsidiaries shall at any time or from time to
     time  while  the  Warrant  is  outstanding,   pay  a  dividend  or  make  a
     distribution on its capital stock in shares of Common Stock,  subdivide its
     outstanding  shares of  Common  Stock  into a  greater  number of shares or
     combine its outstanding  shares into a smaller number of shares or issue by
     reclassification  of its  outstanding  shares of Common Stock any shares of
     its capital stock (including any such reclassification in connection with a
     consolidation   or  merger  in  which  the   Company   is  the   continuing
     corporation),  then the number of Warrant Shares  purchasable upon exercise
     of the  Warrant and the Warrant  Price in effect  immediately  prior to the
     date upon which such change  shall become  effective,  shall be adjusted by
     the Company so that the  Warrantholder  thereafter  exercising  the Warrant
     shall be entitled to receive the number of shares of Common  Stock or other
     capital  stock which the  Warrantholder  would have received if the Warrant
     had been exercised  immediately  prior to such event. Such adjustment shall
     be made successively whenever any event listed above shall occur.

(b)  If any capital reorganization, reclassification of the capital stock of the
     Company,  consolidation or merger of the Company with another  corporation,
     or sale,  transfer or other  disposition of all or substantially all of the
     Company's  assets to another  corporation  shall be  effected,  then,  as a
     condition of such reorganization, reclassification,  consolidation, merger,
     sale, transfer or other disposition, lawful and adequate provision shall be
     made whereby each Warrantholder shall thereafter have the right to purchase
     and  receive  upon the  basis  and upon the  terms  and  conditions  herein
     specified  and  in  lieu  of the  Warrant  Shares  immediately  theretofore
     issuable upon exercise of the Warrant, such shares of stock,  securities or
     assets  as would  have been  issuable  or  payable  with  respect  to or in
     exchange  for a number of  Warrant  Shares  equal to the  number of Warrant
     Shares immediately  theretofore  issuable upon exercise of the Warrant, had
     such  reorganization,   reclassification,   consolidation,   merger,  sale,
     transfer  or other  disposition  not  taken  place,  and in any  such  case
     appropriate  provision  shall  be  made  with  respect  to the  rights  and
     interests  of each  Warrantholder  to the end  that the  provisions  hereof
     (including,  without  limitations,  provision for adjustment of the Warrant
     Price) shall  thereafter  be  applicable,  as nearly  equivalent  as may be
     practicable  in relation to any shares of stock,  securities  or properties
     thereafter  deliverable  upon the exercise  hereof.  The Company  shall not
     effect any such consolidation,  merger, sale, transfer or other disposition
     unless  prior  to or  simultaneously  with  the  consummation  thereof  the
     successor  corporation  (if other  than the  Company)  resulting  from such
     consolidation  or  merger,  or  the  corporation  purchasing  or  otherwise
     acquiring  such assets or other  appropriate  corporation  or entity  shall
     assume, by written  instrument  executed and delivered to the Company,  the
     obligation  to deliver to the holder of the  Warrant  such shares of stock,
     securities or assets as, in accordance with the foregoing provisions,  such
     holder may be  entitled to purchase  and the other  obligations  under this
     Warrant.  The  provisions of this  paragraph (b) shall  similarly  apply to
     successive  reorganizations,  reclassifications,  consolidations,  mergers,
     sales, transfers or other dispositions.

(c)  In  case  the  Company  shall  fix  a  record  date  for  the  making  of a
     distribution   to  all  holders  of  Common  Stock   (including   any  such
     distribution made in connection with a consolidation or merger in which the
     Company is the  continuing  corporation)  of evidences of  indebtedness  or
     assets or  subscription  rights or  warrants,  the  Warrant  Price to be in
     effect  after such  record  date shall be  determined  by  multiplying  the
     Warrant  Price  in  effect  immediately  prior  to  such  record  date by a
     fraction,  the  numerator  of which shall be the total  number of shares of
     Common Stock  outstanding  multiplied by the Fair Market Value per share of
     Common Stock (as defined below), less the fair market value (on a per share
     basis) (as determined by the Company's Board of Directors in good faith) of
     said  assets  or  evidences  of  indebtedness  so  distributed,  or of such
     subscription rights or warrants,  and the denominator of which shall be the
     total  number  of shares of Common  Stock  outstanding  multiplied  by such
     current Fair Market Value per share of Common Stock.  Such adjustment shall
     be made  successively  whenever  such a record date is fixed.  "Fair Market
     Value" of the Common  Stock shall be the closing  price of the Common Stock
     as  reported  by the Nasdaq  Stock  Market (or other  exchange or market on
     which  the  Common  Stock  is  principally   traded)  on  the  trading  day
     immediately preceding the date on which such value is being determined.

(d)  For the  duration  of the  term  of this  Warrant,  if the  Company  or any
     subsidiary  shall at any time or from time to time issue or sell securities
     (other than  issuances of  Underlying  Shares  pursuant to  Debentures  and
     Warrants  under the Purchase  Agreement,  shares or options issued or which
     may be issued pursuant to the Company's current employee or director option
     plans or  shares  issued  upon  exercise  of  options,  warrants  or rights
     outstanding  on the date of the  Agreement  and listed in the Company's SEC
     Filings  and  other  than  issuances   described  in  and  permitted  under
     7.2(b)(iii) of the Purchase  Agreement) at an effective a Per Share Selling
     Price (as defined below) which is less than:

(A)  the  closing  sale  price per share of the  Common  Stock on the  Principal
     Market on the Trading Day next preceding such issue or sale or, in the case
     of  issuances  to  holders  of its  Common  Stock,  the date  fixed for the
     determination of stockholders entitled to receive such warrants, rights, or
     options ("Fair Market Price"), then in each such case, the Warrant Price in
     effect  immediately  prior  to  such  issue  or  sale or  record  date,  as
     applicable, shall be automatically reduced effective concurrently with such
     issue or sale to an amount determined by multiplying the Warrant Price then
     in effect by a fraction, (x) the numerator of which shall be the sum of (1)
     the number of shares of Common Stock outstanding  immediately prior to such
     issue or sale,  plus (2) the  number of shares  of Common  Stock  which the
     aggregate  consideration received by the Company for such additional shares
     would purchase at such Fair Market Price,  and (y) the denominator of which
     shall be the number of shares of Common  Stock of the  Company  outstanding
     immediately after such issue or sale; or

(B)  the Warrant  Price,  then in each such case,  the  Warrant  Price in effect
     immediately  prior to such  issue or sale or record  date,  as  applicable,
     shall be automatically  reduced  effective  concurrently with such issue or
     sale to an amount equal to such Per Share Selling Price.

     The foregoing  provision of this subsection shall not apply to issuances or
sales  pursuant to the  Company's  duly adopted  employee or director  bona fide
options plans and/or  compensation  arrangements.  For purposes of the preceding
paragraph,  in the event that the effective purchase price is less than both the
Fair Market  Value and the Warrant  Price,  then the  calculation  method  which
yields the greatest downward adjustment in the Warrant Price shall be used.

     For the purposes of the foregoing  adjustment,  in the case of the issuance
of any convertible  securities,  warrants,  options or other rights to subscribe
for or to  purchase  or  exchange  for,  shares  of Common  Stock  ("Convertible
Securities"),  the  maximum  number  of shares of  Common  Stock  issuable  upon
exercise,  exchange or conversion of such Convertible Securities shall be deemed
to be outstanding,  provided that no further  adjustment  shall be made upon the
actual  issuance of Common Stock upon  exercise,  exchange or conversion of such
Convertible Securities.

     For the  purposes of this Section  9(d),  "Per Share  Selling  Price" shall
include  the  amount  actually  paid by third  parties  for each share of Common
Stock.  In the  event a fee is paid  by the  Company  in  connection  with  such
transaction,  any such fee shall be deducted  from the selling price pro rata to
all shares sold in the  transaction  to arrive at the Per Share Selling Price. A
sale of shares of Common  Stock  shall  include  the sale or issuance of rights,
options,  warrants or convertible,  exchangeable or exercisable securities under
which the Company is or may become  obligated to issue  shares of Common  Stock,
and in such  circumstances  the Per  Share  Selling  Price of the  Common  Stock
covered  thereby shall also include the exercise,  exchange or conversion  price
thereof (in addition to the consideration received by the Company upon such sale
or issuance less the fee amount as provided above). In case of any such security
issued in a  Variable  Rate  Transaction  or an MFN  Transaction,  the Per Share
Selling Price shall be deemed to be the lowest  conversion or exercise  price at
which such securities are converted or exercised or might have been converted or
exercised in the case of a Variable Rate  Transaction,  or the lowest adjustment
price in the case of an MFN Transaction,  over the life of such  securities.  If
shares are issued for a  consideration  other than cash,  the Per Share  Selling
Price shall be the fair value of such  consideration as determined in good faith
by independent  certified public accountants  mutually acceptable to the Company
and the Purchaser.

(e)  An adjustment shall become effective  immediately  after the record date in
     the  case of each  dividend  or  distribution  and  immediately  after  the
     effective date of each other event which requires an adjustment.

(f)  In the event that, as a result of an adjustment made pursuant to Section 9,
     the holder of this Warrant  shall become  entitled to receive any shares of
     capital stock of the Company other than shares of Common Stock,  the number
     of such other shares so  receivable  upon exercise of this Warrant shall be
     subject thereafter to adjustment from time to time in a manner and on terms
     as nearly  equivalent as practicable to the provisions  with respect to the
     Warrant Shares contained in this Warrant.

(g)  In the event of any  adjustment  in the number of Warrant  Shares  issuable
     hereunder   upon   exercise,   the  Warrant   Price   shall  be   inversely
     proportionately  increased or decreased,  as the case may be, such that the
     aggregate  purchase  price for Warrant  Shares  upon full  exercise of this
     Warrant shall remain the same. Similarly, in the event of any adjustment in
     the Warrant  Price,  the number of Warrant Shares  issuable  hereunder upon
     exercise shall be inversely  proportionately increased or decreased, as the
     case may be, such that the aggregate purchase price for Warrant Shares upon
     full exercise of this Warrant shall remain the same.

Section 10.  Fractional  Interest.  The  Company  shall not be required to issue
     fractions  of Warrant  Shares  upon the  exercise  of the  Warrant.  If any
     fraction  of a Warrant  Share  would,  except  for the  provisions  of this
     Section,  be  issuable  upon the  exercise  of the  Warrant  (or  specified
     portions thereof),  the Company shall round such calculation to the nearest
     whole number and disregard the fraction.

Section 11.  Benefits.  Nothing in this  Warrant  shall be construed to give any
     person,  firm or corporation (other than the Company and the Warrantholder)
     any legal or equitable  right,  remedy or claim,  it being agreed that this
     Warrant shall be for the sole and exclusive  benefit of the Company and the
     Warrantholder.

Section 12. Notices to Warrantholder.  Upon the happening of any event requiring
     an  adjustment  of the Warrant  Price,  the Company  shall  forthwith  give
     written notice thereof to the Warrantholder at the address appearing in the
     records of the Company, stating the adjusted Warrant Price and the adjusted
     number of Warrant  Shares  resulting  from such event and setting  forth in
     reasonable  detail the method of calculation  and the facts upon which such
     calculation  is based.  In the event of a dispute  with respect to any such
     calculation,  the certificate of the Company's independent certified public
     accountants  shall  be  conclusive  evidence  of  the  correctness  of  any
     computation made, absent manifest error. Failure to give such notice to the
     Warrantholder  or any  defect  therein  shall not affect  the  legality  or
     validity of the subject  adjustment.  At the Warrantholder's  request,  the
     Company shall deliver to the  Warrantholder as of a requested date a notice
     specifying  the Warrant  Price and the number of Warrant  Shares into which
     this Warrant is exercisable as of such date.

Section 13.  Identity of Transfer  Agent.  The  initial  Transfer  Agent for the
     Common Stock is:

                  Computershare (f/k/a Securities Transfer Trust, Inc.)
                  12039 W. Alameda Parkway
                  Lakewood, Colorado 80228

     Forthwith upon the  appointment  of any  subsequent  transfer agent for the
Common Stock or other shares of the Company's  capital  stock  issuable upon the
exercise of the rights of purchase  represented by the Warrant, the Company will
fax to the  Warrantholder a statement setting forth the name and address of such
transfer agent.

Section 14.  Notices.  Any  notice  pursuant  hereto  to be given or made by the
     Warrantholder  to or on the Company shall be sufficiently  given or made if
     delivered  personally  or by  facsimile  or if sent  by an  internationally
     recognized courier, addressed as follows:

                  Fonar Corporation
                  110 Marcus Drive
                  Melville, New York 11747
                  Telephone:        (631) 694-2929
                  Fax:              (631) 249-3734

     or such other  address as the  Company  may specify in writing by notice to
     the  Warrantholder  complying as to delivery with the terms of this Section
     14.

          Any notice pursuant hereto to be given or made by the Company to or on
     the  Warrantholder  shall  be  sufficiently  given  or made  if  personally
     delivered or if sent by an  internationally  recognized  courier service by
     overnight or two-day service,  to the address set forth on the books of the
     Company or, as to each of the Company and the Warrantholder,  at such other
     address as shall be designated by such party by written notice to the other
     party complying as to delivery with the terms of this Section 14.

          All  such   notices,   requests,   demands,   directions   and   other
     communications shall, when sent by courier, be effective two (2) days after
     delivery to such courier as provided and addressed as aforesaid.  All faxes
     shall be effective upon receipt.

Section 15. Registration  Rights. The initial holder of this Warrant is entitled
     to the  benefit of certain  registration  rights in respect of the  Warrant
     Shares as provided in the Registration Rights Agreement.

Section 16.  Successors.  All the covenants and provisions  hereof by or for the
     benefit of the  Warrantholder  shall  bind and inure to the  benefit of its
     respective successors and assigns hereunder.

Section 17.  Governing  Law.  This Warrant shall be deemed to be a contract made
     under  the laws of the  State of New  York,  without  giving  effect to its
     conflict of law  principles,  and for all  purposes  shall be  construed in
     accordance with the laws of said State.

Section 18. 9.9% and 19.9% Limitations.

(a)  Notwithstanding  anything to the contrary  contained herein,  the number of
     shares of Common  Stock that may be acquired  by the holder  upon  exercise
     pursuant to the terms hereof shall not exceed a number that,  when added to
     the total  number of shares of Common Stock  deemed  beneficially  owned by
     such  holder  at such  time  (other  than by  virtue  of the  ownership  of
     securities or rights to acquire  securities  (including the Warrant Shares)
     that  have  limitations  on the  holder's  right to  convert,  exercise  or
     purchase  similar to the limitation  set forth  herein),  together with all
     shares of Common Stock deemed  beneficially  owned (other than by virtue of
     the  ownership  of  securities  or rights to acquire  securities  that have
     limitations  on the right to convert,  exercise or purchase  similar to the
     limitation set forth herein) by the  Warrantholder's  "affiliates"  at such
     time (as defined in Rule 144 of the Act) ("Aggregation Parties") that would
     be  aggregated  for purposes of  determining  whether a group under Section
     13(d) of the  Securities  Exchange Act of 1934, as amended,  exists,  would
     exceed 9.9% of the total issued and outstanding  shares of the Common Stock
     (the "Restricted Ownership  Percentage").  Each holder shall have the right
     (x) at any time and from time to time to reduce  its  Restricted  Ownership
     Percentage  immediately  upon  notice to the  Company  and (y)  (subject to
     waiver)  at any time and from  time to time,  to  increase  its  Restricted
     Ownership  Percentage  immediately  in the  event  of the  announcement  as
     pending or planned, of a change of control  transaction  (including without
     limitation a  transaction  that would result in a transfer of more than 50%
     of the Company's voting power or equity,  or a sale of all or substantially
     all of the Company's assets, or a transaction that would result in a person
     or  "group"  being  deemed  the  beneficial  owner  of 50% or  more  of the
     Company's voting power or equity).

(b)  The holder covenants at all times on each day (each such day being referred
     to as a "Covenant Day") as follows: during the balance of such Covenant Day
     and the  succeeding  sixty-one  (61) days (the balance of such Covenant Day
     and the succeeding 61 days being referred to as the "Covenant Period") such
     holder  will not  acquire  shares of  Common  Stock  pursuant  to any right
     (including  exercise  of  Warrants)  existing  at the  commencement  of the
     Covenant  Period to the  extent the  number of shares so  acquired  by such
     holder  and its  Aggregation  Parties  (ignoring  all  dispositions)  would
     exceed:

(x)  the Restricted Ownership Percentage of the total number of shares of Common
     Stock outstanding at the commencement of the Covenant Period, minus

(y)  the number of shares of Common Stock  actually owned by such holder and its
     Aggregation Parties at the commencement of the Covenant Period.

     A new and independent  covenant will be deemed to be given by the holder as
of each moment of each  Covenant Day. No covenant  will  terminate,  diminish or
modify any other covenant.  The holder agrees to comply with each such covenant.
The  Warrantholder  may therefore  from time to time be subject to multiple such
covenants,  each one having been made at a  different  Covenant  Time,  and some
possibly being more restrictive than others.  The Warrantholder must comply with
all such covenants  then in effect.  This Section 18 controls in the case of any
conflict  with any other  provision of the Purchase  Agreement or any  agreement
entered into in connection therewith.

     The  Company's  obligation  to issue  Common  Stock which would exceed such
limits referred to in this Section 18 shall be suspended to the extent necessary
until such time,  if any, as shares of Common Stock may be issued in  compliance
with such restrictions.

(c)  Notwithstanding   anything   contained   herein,  in  the  event  that  the
     Warrantholder  has timely exercised this Warrant and the issuance of all or
     a portion of the  Warrant  Shares to be issued  pursuant  to such  exercise
     would constitute a breach of the Company's  obligations  under the rules or
     regulations of the Nasdaq Stock Market as they apply to the Company, or any
     other principal  securities  exchange or market  ("Principal  Market") upon
     which the Common Stock is or becomes traded (the "Cap  Regulations"),  then
     the Company shall not be obligated to issue any such Warrant  Shares to the
     extent such shares are in excess of the maximum  permissible  amount  under
     such Cap Regulations ("Excess Shares").  Within five (5) days following any
     occurrence  of  Excess  Shares,  the  Company  shall  promptly  pay  to the
     Purchaser,  in lieu of the Purchaser's right to receive such Excess Shares,
     an amount equal to 120% of the difference  between (a) the number of Excess
     Shares  multiplied  by the closing  sale price per share of Common Stock on
     the Principal  Market on the trading day immediately  preceding the date of
     the exercise of this Warrant, and (b) the aggregate exercise price for such
     Excess  Shares.  Only  shares  of Common  Stock  acquired  pursuant  to the
     Purchase Agreement (including Underlying Shares and Warrant Shares) will be
     included in determining  whether the limitation  contained  herein would be
     exceeded for purposes of this Section 18(c).

Section 19.  Replacement  Warrants.  The  Company  agrees  that  within ten (10)
     business days after any request from time to time of the Warrantholder,  it
     shall deliver to such holder a new Warrant in  substitution of this Warrant
     which is identical in all respects except that the then Warrant Price shall
     be  appropriately  specified in the Warrant,  and the Warrant shall specify
     the fixed  number  of  Warrant  Shares  into  which  this  Warrant  is then
     exercisable. Such changes are intended not as amendments to the Warrant but
     only as  clarification of the foregoing  numbers for convenience  purposes,
     and such changes shall not affect any provisions concerning  adjustments to
     the Warrant Price or number of Warrant Shares contained herein.

Section  20.  Absolute   Obligation  to  Issue  Warrant  Shares.  The  Company's
     obligations  to issue and deliver  Warrant  Shares in  accordance  with the
     terms hereof are absolute and unconditional,  irrespective of any action or
     inaction by the holder  hereof to enforce  the same,  any waiver or consent
     with respect to any provision hereof,  the recovery of any judgment against
     any Person or any action to enforce the same, or any setoff,  counterclaim,
     recoupment,  limitation or termination,  or any breach or alleged breach by
     the holder  hereof or any other Person of any  obligation to the Company or
     any  violation  or  alleged  violation  of law by the  holder  or any other
     Person,  and irrespective of any other  circumstance  which might otherwise
     limit such  obligation  of the Company to the holder  hereof in  connection
     with the issuance of Warrant Shares.  The Company will at no time close its
     shareholder books or records in any manner which interferes with the timely
     exercise of this Warrant.

Section 21.  Assignment,  Etc.  The  Warrantholder  may assign or transfer  this
     Warrant  to any  transferee  only with the  prior  written  consent  of the
     Company,  which may not be unreasonably withheld or delayed,  provided that
     (i) the  Warrantholder  may assign or transfer  this Warrant to any of such
     Warrantholder's affiliates without the consent of the Company and (ii) upon
     any Event of Default (as defined in the Debentures),  the Warrantholder may
     assign or transfer  this Warrant  without the consent of the  Company.  The
     Warrantholder  shall notify the Company of any such  assignment or transfer
     promptly. This Warrant shall be binding upon the Company and its successors
     and shall inure to the benefit of the  Warrantholder and its successors and
     permitted assigns.


     IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed
as of the date first written above.




                            FONAR CORPORATION
                     By:    /s/
                            ------------------------
                     Name:
                            ------------------------
                     Title:
                            ------------------------

Attest:

      Sign: /s/
           ------------------------

Print Name:
           ------------------------


                                FONAR CORPORATION
                              WARRANT EXERCISE FORM
Fonar Corporation
110 Marcus Drive
Melville, New York 11747
Telephone:        (631) 694-2929
Fax:              (631) 249-3734
Attention:        President

     This  undersigned  hereby  irrevocably  elects  to  exercise  the  right of
purchase  represented  by the within  Warrant  ("Warrant")  for, and to purchase
thereunder  ----------  shares of Common Stock* ("Warrant  Shares") provided for
therein,  and requests  that  certificates  for the Warrant  Shares be issued as
follows:

                           -------------------------------
                           Name
                           -------------------------------
                           Address
                           ===============================

and,  if the  number  of  Warrant  Shares  shall not be all the  Warrant  Shares
purchasable upon exercise of the Warrant,  that a new Warrant for the balance of
the Warrant Shares.

     The  undersigned  hereby  represents  that  all  the   representations  and
warranties  contained  in Sections  5.3 through 5.8 of the  Securities  Purchase
Agreement  dated on or about May ---,  2001 between  Fonar  Corporation  and the
Purchasers named therein are true and correct in all material respects as of the
date hereof and as if the undersigned  were the Purchaser stated therein (if the
undersigned is not such Purchaser).

     In lieu of delivering physical certificates representing the Warrant Shares
purchasable upon exercise of this Warrant, provided the Company's transfer agent
is  participating  in  the  Depository  Trust  Company  ("DTC")  Fast  Automated
Securities  Transfer ("FAST") program,  upon request of the Holder,  the Company
shall  use its  best  efforts  to cause  its  transfer  agent to  electronically
transmit  the  Warrant  Shares  issuable  upon  conversion  or  exercise  to the
undersigned, by crediting the account of the undersigned's prime broker with DTC
through its Deposit Withdrawal Agent Commission ("DWAC") system.

Dated:
      ------------------------

                                          Signature:
                                                    ---------------------------

                                Name (please print):
                                                    ---------------------------

                                            Address:
                                                    ---------------------------

*    NOTE:  If exercise of the Warrant is made by  surrender  of the Warrant and
     the number of shares  indicated  exceeds  the  maximum  number of shares to
     which a holder is entitled,  the Company will issue such maximum  number of
     shares  purchasable upon exercise of the Warrant  registered in the name of
     the  undersigned  Warrantholder  or the  undersigned's  assignee  as  below
     indicated and deliver same to the address stated below.