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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>Relevant Information Regarding Compensation Benefits DUE TO A MEDICAL CONDITION, FIRST CLASS TRAVEL WAS MADE AVAILABLE TO ONE EMPLOYEE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>METHODS USED BY ORGANIZATION TO ESTABLISH CEO/EXEC. DIRECTOR COMPENSATION ON AN ANNUAL BASIS AIP RETAINS A COMPENSATION CONSULTING FIRM TO REVIEW THE CURRENT COMPENSATION OF THE CEO, WHICH INCLUDES DETAILED COMPARISONS WITH COMPARABLY SIZED NOT-FOR-PROFIT ORGANIZATIONS AS WELL AS SELECTED PEER SCIENTIFIC AND ENGINEERING ORGANIZATIONS. THIS INFORMATION IS REVIEWED BY THE SECRETARY OF THE BOARD AND THE CHAIR OF THE GOVERNING BOARD OF AIP. THE CHAIR THEN DISCUSSES IT WITH THE EXECUTIVE COMMITTEE OF THE GOVERNING BOARD WHO MAKES THE FINAL DECISION OF THE COMPENSATION FOR THE CEO. COMPENSATION FOR THE CEO IS DISCUSSED AND DOCUMENTED DURING THE EXECUTIVE SESSION OF AIP'S BOARD MEETINGS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4 - RECEIVED SEVERANCE, SUPPLEMENTAL NQ RETIREMENT, EQUITY</FormAndLineReferenceDesc>
        <ExplanationTxt>BASED COMPENSATION PART I, LINE 4A Severance Payment: The following individuals received a severance payment during the year: Adriana Acosta $117,775 Evan Owens $108,050 Larry Belmont $ 71,250 Joel LaCalamita $ 80,050 Chris McMahon $ 74,750 Charles Minder $ 46,806 Hu Wang $ 47,269</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>Supplemental non-qualified retirement plan The following individual participated in section 457(F) supplemental, non-qualified retirement plan: H. Frederick Dylla The following amounts were deferred during the year: H. Frederick Dylla $25,000. The following 457(F) amounts became vested in or paid out during the year: H. Frederick Dylla $53,994</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4A</FormAndLineReferenceDesc>
        <ExplanationTxt>PROGRAM SERVICE ACCOMPLISHMENTS AIP Publishing LLC (AIPP) is a single member limited liability company owned by The American Institute of Physics (AIP). AIPP is a scholarly publisher in the physical and related sciences, providing the global science community with a comprehensive collection of cited, peer-reviewed scientific papers and other information. Accessed by reseachers at nearly 4,000 institutions worldwide, AIPP's portfolio of 17 journals includes prestigious titles such as Applied Physics Letters, Journal of Applied Physics, The Journal of Chemical Physics, and the AIP Conference Proceedings. AIPP supports the scientific and educational mission of AIP through its scholarly publishing activities and also works with several of AIP's member societies and other publishing partners to help them advance their publishing missions. FORM 990, PART III, LINE 4B Program Service Accomplishments AIP PROGRAMS: IN KEEPING WITH ITS MISSION AND TO FULFILL THE CONSTITUTIONAL MANDATE IN PUBLIC INFORMATION, EDUCATION AND RELATED ACTIVITIES, AIP OFFERS UNIQUE SERVICES, PRODUCTS, AND EXPERTISE IN: EDUCATION AND STUDENT SERVICES, HISTORY OF PHYSICS, MEDIA AND GOVERNMENT RELATIONS, MAGAZINE PUBLISHING AND EMPLOYMENT SERVICES FOR SCIENCE AND ENGINEERING PROFESSIONALS, STATISTICAL RESEARCH, AND INDUSTRY OUTREACH. WITH THE PURPOSE OF PROMOTING THE PROGRESS AND RELEVANCE OF PHYSICS AND ALLIED FIELDS AND ADVANCE THEIR CONTRIBUTIONS AND RESPONSIVENESS TO SOCIETY, AIP GENERATES, COMMUNICATES AND POPULARIZES KNOWLEDGE, UNIQUE EXPERTISE AND AUTHORITATIVE INFORMATION. AIP SERVES THE FOLLOWING AUDIENCES: AIP MEMBER SOCIETIES, THEIR INDIVIDUAL MEMBERS, STUDENTS AND THE GENERAL PUBLIC. THE SOCIETY OF PHYSICS STUDENTS (SPS) IS A SCIENTIFIC SOCIETY FOR PHYSICS UNDERGRADUATES AND THEIR MENTORS, WITH MORE THAN 3800 MEMBERS AND 754 CHAPTERS NATIONWIDE AND SEVERAL INTERNATIONAL CHAPTERS. SIGMA PI SIGMA, THE PHYSICS HONOR SOCIETY, RECOGNIZES OUTSTANDING SCHOLARS IN PHYSICS, ENCOURAGES INTEREST IN THE FIELD, AND PROMOTES AN ATTITUDE OF SERVICE AMONG ITS OVER 63,000 MEMBERS TOWARDS THE ENTIRE PHYSICS COMMUNITY AND THE PUBLIC. THE SOCIETY OF PHYSICS STUDENTS AND SIGMA PI SIGMA PROVIDE ENRICHING EXPERIENCES FOR STUDENTS INTERESTED IN THE PHYSICAL SCIENCES THROUGH INTERNSHIPS, SCHOLARSHIPS, FELLOWSHIPS AND STUDENT PROGRAMS AT SCIENTIFIC MEETINGS - OPPORTUNITIES THAT ARE VITAL TO THE PROFESSIONAL DEVELOPMENT OF THE UNDERGRADUATE PHYSICS STUDENT. THE AIP HISTORY PROGRAMS (THE CENTER FOR THE HISTORY OF PHYSICS AND THE NIELS BOHR LIBRARY &amp; ARCHIVES) WORK TO PRESERVE AND MAKE KNOWN THE HISTORICAL RECORD OF MODERN PHYSICS AND ALLIED SCIENCES. THROUGH DOCUMENTATION, ARCHIVAL COLLECTIONS AND EDUCATIONAL INITIATIVES, AIP HISTORY PROGRAMS ENSURE THAT THE HERITAGE OF MODERN PHYSICS IS SAFEGUARDED AND ITS STORY ACCURATELY TOLD. THE HISTORY OF PHYSICS OFFERS A RICH FRAMEWORK OF EXCITING PAST ACHIEVEMENTS AND VALUABLE GUIDANCE FOR CURRENT AND FUTURE GENERATIONS OF PHYSICISTS. PHYSICS TODAY PROVIDES A UNIFYING INFLUENCE FOR THE PHYSICAL SCIENCES BY PROVIDING BROAD AND AUTHORITATIVE COVERAGE OF SCIENTIFIC RESEARCH, NEWS, AND OPINIONS OF RELEVANCE TO THE GLOBAL SCIENTIFIC COMMUNITY. THE MAGAZINE IS RECEIVED BY MEMBERS OF TEN SCIENTIFIC SOCIETIES, MANY LIBRARIES AND INSTITUTIONS AROUND THE WORLD, AND OTHER INTERESTED INDIVIDUALS. THE PHYSICS TODAY WEBSITE HAS ADDITIONAL MATERIAL AND IS UPDATED DAILY; IN ADDITION, PHYSICS TODAY HAS A STRONG PRESENCE ON SOCIAL MEDIA WITH, FOR EXAMPLE, MORE THAN 2 MILLION ACTIVE FOLLOWERS ON FACEBOOK. INSIDE SCIENCE IS AN EDITORIALLY INDEPENDENT, NONPROFIT NEWS OUTLET THAT PRODUCES QUALITY, ACCURATE STEM (SCIENCE-TECHNOLOGY-EDUCATION-MATHEMATICS) NEWS. THE CONTENT IS AVAILABLE FOR SYNDICATION BY MAINSTREAM NEWS ORGANIZATIONS, INCLUDING THOSE WITH REDUCED OR NONEXISTENT SCIENCE REPORTERS, IN THE ERA OF DIMINISHED REVENUE IN THE FOR-PROFIT NEWS ORGANIZATIONS. INSIDE SCIENCE INCLUDES FOUR AREAS: NEWS ARTICLES, VIDEOS, GUEST COLUMNS AND AN EDITOR'S BLOG. THE AIP MEDIA SERVICES TEAM WORKS WITH AIP PUBLISHING, AIP MEMBER SOCIETIES AND ALLIED ORGANIZATIONS TO PRODUCE AND PROMOTE TIMELY AND ACCURATE PUBLIC DISSEMINATION OF SCIENTIFIC ADVANCES AND KNOWLEDGE. MEDIA SERVICE STAFF RUN PRESS ROOMS, ORGANIZE PRESS CONFERENCE AND OTHER OUTREACH EVENTS AND PRODUCE HUNDREDS OF WRITTEN STORIES, VIDEOS, IMAGES, INFOGRAPHS AND OTHER FORMS OF PUBLIC INFORMATION FOR THE MEDIA AND GENERAL PUBLIC EVERY YEAR. THE AIP STATISTICAL RESEARCH CENTER COLLECTS AND DISSEMINATES RELIABLE AND TIMELY DATA ON EDUCATION AND EMPLOYMENT IN PHYSICS AND RELATED FIELDS. DATA IS PUBLISHED IN THE AREAS OF ENROLLMENT, DEGREES, DEMOGRAPHICS, REPRESENTATION OF WOMEN AND MINORITIES, EMPLOYMENT BY ECONOMIC SECTOR, AND SALARY INFORMATION FOR BACHELOR'S, MASTER'S AND PHD DEGREE HOLDERS. THE CENTER ALSO PROVIDES SURVEY EXPERTISE AND CONTRACTS WITH MEMBER SOCIETIES AND OUTSIDE ORGANIZATIONS TO CARRY OUT TARGETED STUDIES. AIP INDUSTRIAL PHYSICS FORUMS (IPF) BRING TOGETHER INDUSTRIAL AND APPLIED SCIENTISTS, WITH RESEARCH MANAGERS AND LEADERS FROM INDUSTRY, ACADEMIA, AND GOVERNMENT, WITH THE GOAL OF ADVANCING THE CONTRIBUTIONS OF PHYSICS AND PHYSICISTS TO ECONOMIC GROWTH. IPF MEETINGS FEATURE INVITED SPEAKER SESSIONS THAT COMPLEMENT AIP MEMBER SOCIETY MEETINGS. EXPERTS DISCUSS NEW APPLICATIONS OF PHYSICS, PRODUCT DEVELOPMENTS, AND OTHER OPPORTUNITIES FOR SCIENCE IN TODAY'S ECONOMIC ENVIRONMENT. THE IPF OFFERS PARTICIPANTS OPPORTUNITIES TO LEARN ABOUT INNOVATIONS IN THE FIELD, TO INTERFACE WITH THE PEOPLE DRIVING THEM, AND TO STRATEGIZE ABOUT DIRECTIONS FOR FUTURE ECONOMIC AND SCIENTIFIC PROGRESS.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>Significant Changes to Organizational Documents AIP'S CONSTITUTION AND BYLAWS WERE AMENDED TO EFFECTUATE THE RESTRUCTURING OF AIP'S BOARD, TO COMPLY WITH APPLICABLE NEW YORK LAWS, TO CLARIFY AMBIGUOUS LANGUAGE, AND TO MODERNIZE AND STREAMLINE THE DOCUMENTS. THE AMENDMENTS WERE APPROVED BY AIP'S BOARD AND AIP'S MEMBERS IN NOVEMBER 2014.</ExplanationTxt>
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        <ExplanationTxt>Explanation of Classes of Members or Shareholder AIP IS A NON-STOCK, NON-PROFIT MEMBERSHIP CORPORATION.</ExplanationTxt>
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        <ExplanationTxt>How Members or Shareholders Elect Governing Body THE BOARD OF DIRECTORS IS COMPOSED OF THE FOLLOWING INDIVIDUALS: -ONE (1) INDIVIDUAL ELECTED OR APPOINTED BY EACH MEMBER (A "MEMBER SOCIETY DIRECTOR") -NOT LESS THAN TWO (2) AND NOT MORE THAN FOUR (4) INDIVIDUALS, AS THE BOARD OF DIRECTORS SHALL DETERMINE, ELECTED BY THE BOARD OF DIRECTORS (THE "AT-LARGE DIRECTORS") -THE CHAIR OF THE BOARD OF DIRECTORS, THE CORPORATE SECRETARY, AND THE CHIEF EXECUTIVE OFFICERS, EX-OFFICIO (THE "EX-OFFICIO DIRECTORS")</ExplanationTxt>
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        <ExplanationTxt>Form 990 Review Process THE FORM 990 IS PREPARED AND REVIEWED BY THE ORGANIZATION'S INDEPENDENT ACCOUNTING FIRM WITH ASSISTANCE FROM AIP'S SENIOR MANAGEMENT. THE FORM 990 IS THEN REVIEWED BY THE AUDIT COMMITTEE AND THEN MADE AVAILABLE TO ALL MEMBERS OF THE BOARD OF DIRECTORS PRIOR TO FILING.</ExplanationTxt>
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        <ExplanationTxt>Explanation of Monitoring and Enforcement of Conflicts EACH YEAR A CONFLICT OF INTEREST FORM IS COMPLETED BY ALL REQUIRED INDIVIDUALS. THE CHAIR OF THE AUDIT COMMITTEE REVIEWS AND EVALUATES IF THERE IS ANY CONFLICT OF INTEREST AND ITS IMPACT TO THE ORGANIZATION.</ExplanationTxt>
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        <ExplanationTxt>Compensation Review &amp; Approval Process - CEO ON AN ANUUAL BASIS, AIP RETAINS A COMPENSATION CONSULTING FIRM TO REVIEW THE CURRENT COMPENSATION OF THE CEO, WHICH INCLUDES DETAILED COMPARISONS WITH COMPARABLY SIZED NOT-FOR-PROFIT ORGANIZATIONS AS WELL AS SELECTED PEER SCIENTIFIC AND ENGINEERING ORGANIZATIONS. THIS INFORMATION IS REVIEWED BY THE SECRETARY OF THE BOARD AND THE CHAIR OF THE GOVERNING BOARD OF AIP. THE CHAIR THEN DISCUSSES IT WITH THE EXECUTIVE COMMITTEE OF THE GOVERNING BOARD WHO MAKES THE FINAL DECISION OF THE COMPENSATION FOR THE CEO. COMPENSATION FOR THE CEO IS DISCUSSED AND DOCUMENTED DURING THE EXECUTIVE SESSION OF AIP'S BOARD MEETINGS.</ExplanationTxt>
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        <ExplanationTxt>Compensation Review &amp; Approval Process - Officers &amp; Key Employees BIANNUALLY, AIP RETAINS A COMPENSATION CONSULTING FIRM TO REVIEW THE CURRENT COMPENSATION OF THE OPERATING OFFICERS. THE REPORT INCLUDES DETAILED COMPARISONS WITH COMPARABLY SIZED NOT-FOR-PROFIT ORGANIZATIONS AND SELECTED PEER SCIENTIFIC AND ENGINEERING ORGANIZATIONS. THIS INFORMATION IS REVIEWED BY THE VP OF HUMAN RESOURCES AND THE CEO. THE CEO MAKES THE RECOMMENDATION TO THE COMPENSATION COMMITTEE FOR APPROVAL. PERIODICALLY THIS PROCESS IS DONE FOR KEY EMPLOYEES AND IS REVIEWED AND APPROVED BY THE MANAGEMENT COMMITTEE. THE DELIBERATIONS ARE DOCUMENTED IN THE MINUTES.</ExplanationTxt>
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        <ExplanationTxt>Other Organization Documents Publicly Available THE AIP WEBSITE HAS A GOVERNANCE SECTION THAT INCLUDES THE GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY. ALSO, ON THE WEBSITE ARE ANNUAL REPORTS THAT INCLUDE FINANCIAL HIGHLIGHTS FOR AIP.</ExplanationTxt>
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