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        <ExplanationTxt>SOCIETY OF PHYSICS STUDENTS (SPS) IS A NATIONAL COMMUNITY OF PHYSICS AND ASTRONOMY UNDERGRADUATES AND THEIR MENTORS; SIGMA PI SIGMA IS THE PHYSICS HONOR SOCIETY WITH LIFELONG MEMBERS. THESE PROGRAMS CHAMPION THE VOICES OF UNDERGRADUATES AND EARLY-CAREER PROFESSIONALS BY INTEGRATING THEIR VOICES AS ESSENTIAL IN SHAPING THE FUTURE OF THE PHYSICAL SCIENCES, SO THAT AIP HIGHLIGHTS THEIR ROLES ACROSS WORKFORCE, EDUCATION, AND INNOVATION CONVERSATIONS.</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 4C</FormAndLineReferenceDesc>
        <ExplanationTxt>AIP ESTABLISHED ITS HISTORY PROGRAMS, WHICH INCLUDE THE NIELS BOHR LIBRARY, IN 1962. THE NIELS BOHR LIBRARY &amp; ARCHIVES IS A REPOSITORY AND CLEARINGHOUSE FOR INFORMATION IN THE HISTORY OF PHYSICS, ASTRONOMY, GEOPHYSICS, AND ALLIED FIELDS. IN-HOUSE HOLDINGS INCLUDE AN OUTSTANDING COLLECTION OF TEXTBOOKS, MONOGRAPHS, RARE BOOKS, AND RELATED PUBLICATIONS; OVER 30,000 PHOTOGRAPHS AND OTHER IMAGES; OVER 2,000 ONLINE ORAL HISTORY INTERVIEWS WITH MANY OF THE OUTSTANDING FIGURES IN THE PHYSICAL SCIENCES; ARCHIVAL RECORDS OF AIP AND ITS MEMBER SOCIETIES, ALONG WITH OTHER ARCHIVAL RECORDS AND PERSONAL PAPERS OF A SELECT NUMBER OF SCIENTISTS. AIP'S HISTORY PROGRAMS SUPPORT SCHOLARLY EFFORTS TO DOCUMENT, INVESTIGATE, AND UNDERSTAND DEVELOPMENTS IN MODERN PHYSICS AND THEIR IMPACT ON SOCIETY. IT DOES SO THROUGH SUPPORT OF EARLY-CAREER HISTORIANS, ONLINE EXHIBITS, GRANTS-IN-AID TO RESEARCHERS, ORIGINAL SCHOLARLY PUBLICATIONS, ORAL HISTORY INTERVIEWS, HOSTING CONVENINGS, AND PARTICIPATING IN NATIONAL AND INTERNATIONAL CONFERENCES AND HISTORY PROJECTS.</ExplanationTxt>
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        <ExplanationTxt>AIP FOUNDATION IS ORGANIZED AND OPERATES EXCLUSIVELY FOR CHARITABLE, SCIENTIFIC, AND EDUCATIONAL PURPOSES WITHIN THE MEANING OF SECTION 501 (C ) (3) OF THE IRS CODE 1986. IN KEEPING WITH ITS MISSION TO ADVANCE, PROMOTE AND SERVE THE PHYSICAL SCIENCES FOR THE BENEFIT OF HUMANITY, AIP OFFERS UNIQUE EXPERTISE AND PRODUCTS IN: STUDENT ENGAGEMENT; PRESERVATION AND PROMULGATION OF THE HISTORY OF THE PHYSICAL SCIENCES; CONTENT DELIVERY; MAGAZINE PUBLISHING; STATISTICAL RESEARCH; AND PUBLIC POLICY REPORTING, RESEARCH AND ANALYSIS.</ExplanationTxt>
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        <ExplanationTxt>FORM 990 REVIEW PROCESS: THE FORM 990 IS REVIEWED BY THE CFO AND THEN MADE AVAILABLE TO ALL MEMBERS OF THE BOARD OF TRUSTEES. INFORMATION PERTAINING TO CERTAIN CONTRIBUTIONS MAY BE REDACTED FROM THE FORM PRESENTED FOR REVIEW IF REQUESTED BY THE DONOR.</ExplanationTxt>
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        <ExplanationTxt>THE CONFLICT-OF-INTEREST POLICY IS PROVIDED TO EACH MEMBER OF THE BOARD OF TRUSTEES. ALL TRUSTEES ARE REQUIRED TO DISCLOSE ANY CONFLICTS OF INTEREST AND TO NOTIFY THE BOARD OF ANY CONFLICTS THAT MAY ARISE THROUGHOUT THE YEAR.</ExplanationTxt>
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        <ExplanationTxt>OTHER ORGANIZATION DOCUMENTS MADE AVAILABLE TO THE PUBLIC: FINANCIAL INFORMATION AND THE CONFLICT OF INTEREST POLICY ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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        <ExplanationTxt>HOW MEMBERS OF SHAREHOLDERS ELECT GOVERNING BOARD: EXCEPT FOR THE INITIAL BOARD OF TRUSTEES, THE NUMBER OF TRUSTEES CONSTITUTING THE ENTIRE BOARD OF TRUSTEES SHALL BE FIXED BY ACTION OF AIP, AS MEMBER, PROVIDED THAT THE NUMBER OF TRUSTEES SHALL NOT BE LESS THAN 3 NOR MORE THAN 17, INCLUDING TWO EX-OFFICIO TRUSTEES. THE NUMBER OF TRUSTEES MAY BE INCREASED OR DECREASED BY AMENDMENT OF THE BYLAWS OR BY ACTION OF AIP, AS MEMBER.</ExplanationTxt>
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        <ExplanationTxt>AIP, AS MEMBER, SHALL ANNUALLY ELECT TRUSTEES TO FILL THE SEATS OF TRUSTEES WHOSE TERMS ARE EXPIRING, AND EACH TRUSTEE SHALL HOLD OFFICE FOR HIS OR HER TERM AND UNTIL A SUCCESSOR HAS BEEN ELECTED AND QUALIFIED OR UNTIL AN EARLIER RESIGNATION OR REMOVAL. THE CORPORATION MAY BE DISSOLVED, AND ITS ASSETS DISTRIBUTED AS PROVIDED IN THE CERTIFICATE OF INCORPORATION, ONLY BY ACTION OF AIP, AS MEMBER OF THE CORPORATION.</ExplanationTxt>
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        <ExplanationTxt>AIP FOUNDATION PAYS NO COMPENSATION AND THEREFORE HAS NO COMPENSATION POLICY. THE RELATED ORGANIZATION, THE AMERICAN INSTITUTE OF PHYSICS, DETAILS THEIR COMPENSATION POLICIES ON SCHEDULE J AND SCHEDULE O OF THEIR FORM 990.</ExplanationTxt>
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        <ExplanationTxt>THE AIP FOUNDATION IS ORGANIZED AND OPERATES EXCLUSIVELY FOR CHARITABLE, SCIENTIFIC, AND EDUCATIONAL PURPOSES WITHIN THE MEANING OF SECTION 501 (C) (3) OF THE IRS CODE 1986. AIP ADVANCES THE PHYSICAL SCIENCES AS A FEDERATION AND AN INSTITUTE. AS A FEDERATION, AIP WORKS TO ADVANCE THE SUCCESS OF ITS MEMBER SOCIETIES AND AFFILIATES SO THAT THEY CAN LEVERAGE THEIR DIVERSE EXPERTISE AND CONTRIBUTIONS IN ADVANCING THE PHYSICAL SCIENCES IN THE RESEARCH ENTERPRISE, IN THE ECONOMY, IN EDUCATION AND IN SOCIETY. THROUGH THEIR SHARED GOALS AND PARTNERSHIP WITH AIP, MEMBER ORGANIZATIONS BROADEN THEIR IMPACT AND ACHIEVE RESULTS BEYOND THEIR INDIVIDUAL MISSIONS AND MANDATES. AIP ALSO ACTS AS AN INDEPENDENT INSTITUTE THAT EMPOWERS PHYSICAL SCIENTISTS WITH JOURNALISM; SOCIAL SCIENCE, DEMOGRAPHICS AND POLICY RESEARCH; AND HISTORY AND STUDENT PROGRAMS. AIP ALSO ADVANCES THE PHYSICAL SCIENCES THROUGH THE MISSIONS AND OPERATIONS OF AIP PUBLISHING AND OF AIP FOUNDATION. AIP RECOGNIZES AND HONORS EXCELLENCE IN THE PHYSICAL SCIENCES, RAISING PUBLIC AWARENESS OF THE CONTRIBUTIONS OUR COMMUNITY MAKES TO SOCIETY WITH SEVERAL NAMED AWARDS.</ExplanationTxt>
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        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>true</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>true</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>true</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>