Physics outreach encompasses facets of science outreach and physics education, and a variety of activities by schools, research institutes, universities, clubs and institutions such as science museums aimed at broadening the audience for and awareness and understanding of physics, including through trust-building with non-expert audiences. While the general public may sometimes be the focus of such activities, physics outreach often centers on developing and providing resources and making presentations to students, educators in other disciplines, and in some cases researchers within different areas of physics.

History Ongoing efforts to expand the understanding of physics to a wider audience have been undertaken by individuals and institutions since the early 19th century. Historic works, such as the Dialogue Concerning the Two Chief World Systems, and Two New Sciences by Galileo Galilei, sought to present revolutionary knowledge in astronomy, frames of reference, and kinematics in a manner that a general audience could understand with great effect.

In the mid-1800s, English physicist and chemist, Michael FaradayLan, Boon Leong, and Jeanette B. S. Lim. "Michael Faraday: Prince Of Lecturers In Victorian England." The Physics Teacher (Stony Brook, N.Y.) 39.1 (2001): 32-36. gave a series of nineteen lectures aimed towards young adults with the hopes of conveying scientific phenomena. His intentions were to raise awareness, inspire them and generate revenue of the Royal Institution. This series became known as the Christmas lectures, and still continues today. By the early 20th century, the public notoriety of physicists such as Albert Einstein and Marie Curie, and inventions such as radio led to a growing interest in physics. In 1921, in the United States, the establishment of Sigma Pi Sigma physics honor society at universities was instrumental in the expanding number of physics presentations, and led to the creation of physics clubs open to all students.Dixon, P. (1996, October 1). History. Retrieved from http://www.sigmapisigma.org/history.htm

Museums were an important form of outreach but most early science museums were generally focused on natural history. Some specialized museums, such as the Cavendish Museum at University of Cambridge, housed many of the historically important pieces of apparatus that contributed to the major discoveries by Maxwell, Thomson, Rutherford, etc.Visit the Cavendish Museum. (2008, January 1). Retrieved from http://www-outreach.phy.cam.ac.uk/cav_museum/. However, such venues provided little opportunity for hands-on learning or demonstrations.

In August 1969, Frank Oppenheimer dedicated his new Exploratorium in San Francisco primarily to interactive science exhibits that demonstrated principles in physics. The Exploratorium published the details of their own exhibits in "Cookbooks" that served as an inspiration to many other museums around the world, and since then has diversified into many outreach programs. Oppenheimer had researched European science museums while on a Guggenheim Fellowship in 1965. He noted that three museums served as important influences on the Exploratorium: the Palais de la Découverte, which displayed models to teach scientific concepts and employed students as demonstrators, a practice that directly inspired the Exploratorium's much-lauded High School Explainer Program; the South Kensington Museum of Science and Art, which Oppenheimer and his wife visited frequently; and the Deutsches Museum in Munich, the world's largest science museum, which had a number of interactive displays that impressed the Oppenheimers.Dr. Frank Oppenheimer - Biography (long). (2014, January 1) Retrieved from http://www.exploratorium.edu/about/history/frank.

In the ensuing years, physics outreach, and science outreach more generally, continued to expand and took on new popular forms, including highly successful television shows such as Cosmos: A Personal Voyage, first broadcast in 1980.

As a form of outreach within the physics education community for teachers and students, in 1997 the US National Science Foundation (NSF) and Department of Energy USDOE established QuarkNet, a professional teacher development program. In 2012, the University of Notre Dame received a $6.1M, five-year grant to support a nationwide expansion of the Quarknet program. Also in 1997, the European Particle Physics Outreach Group, led by Christopher Llewellyn Smith, FRS, and Director General of CERN, was formed to create a community of scientists, science educators, and communication specialists in science education and public outreach for particle physics. This group became the International Particle Physics Outreach Group (IPPOG) in 2011 after the start up of the LHC.About IPPOG. (n.d.). Retrieved from http://ippog.web.cern.ch/content/2011/about-ippog

Innovation Many contemporary initiatives in physics outreach have begun to shift focus, transcending traditional field boundaries, seeking to engage students and the public by integrating elements of aesthetic design and popular culture. The goal has been not only to push physics out of a strictly science education framework but also to draw in professionals and students from other fields to bring their perspectives on physical phenomena. Such work includes artists creating sculptures using ferrofluids, and art photography using high speed and ultra high speed photography.

Other efforts, such as University of Cambridge's Physics at Work program have created annual events to demonstrate to secondary students uses of physics in everyday life and a Senior Physics Challenge. Seeing the importance these initiatives, Cambridge has established a full-time physics outreach organization, an Educational Outreach Office, and aspirations for a Center of Physics and expanded industrial partnerships that "would include a well equipped core team of outreach officers dedicated to demonstrating the real life applications of physics, showing that physics is an accessible and relevant subject".The Future of Outreach. Retrieved from http://www.phy.cam.ac.uk/outreach/development

The French research group, La Physique Autrement (Physics Reimagined), of the Laboratoire de Physique des Solides, works on research about new ways to present modern solid-state physics and to engage the general public. In 2013, Physics Today covered this group in an article entitled "Quantum Physics For Everyone" which discussed how with the help of designers and unconventional demonstrations, the project sought out and succeeded to engage people who never thought of themselves as interested in science."Quantum Physics for Everyone", J. Bobroff, Physics Today p.60, sept 2013. http://hebergement.u-psud.fr/supraconductivite/pdf/physics_today_bobroff.pdf

The Science & Entertainment Exchange was developed by the United States National Academy of Sciences (NAS) to increase public awareness, knowledge, and understanding of science and advanced science technology through its representation in television, film, and other media. It was officially launched in 2008 as a partnership between the NAS and Hollywood. The Exchanged is Based in Los Angeles, California.

Museums and public venues primarily focused on physical phenomena

Canada Montreal Science Centre (Montreal, Quebec) displays many hands-on activities involving various physics phenomena.

Finland Heureka (Helsinki) is an NPO science center run by the Finnish Science Centre Foundation with a broad spectrum of physics-related exhibits.

France Cité des Sciences et de l'Industrie (Paris) is the largest French science museum, and contains permanent exhibits and hands-on experiments. Palais de la Découverte (Paris) contains permanent exhibits and interactive experiments with commentaries by lecturers. It includes a Zeiss planetarium with 15-metre dome. It was created in 1937 by the French Nobel Prize physicist Jean Baptiste Perrin. Musée des Arts et Métiers (Paris) focuses on the preservation of scientific instruments and inventions. Other science museums that are part of the Cultural Center of Science, Technology and Industry (CCSTI) exist all across France : Espace des Sciences (Rennes), La Casemate (Grenoble), the Cité de l'espace (Toulouse).

Germany Deutsches Museum (Munich) is the world's largest science museum. One of the most popular events is the high voltage demonstration of a Faraday cage as part of their series on electric power.

Islamic Republic of Iran Iran Science and Technology Museum (Tehran) is the largest science museum in Iran. This museum, by holding varied scientific and educational programs, provides the required situation for creation and propagation of scientific thought in the society. One of these programs is the "Physics Show".

Netherlands NEMO (Amsterdam) is the largest science center in the Netherlands, with hands-on science exhibitions.

United States Exploratorium (San Francisco) is one of the foremost interactive science and art museums in the United States dedicated to exploring how the world works and consists of interactive exhibits, experiences and curious exploration. The Exploratorium was opened in 1969, and now attracts over a million visitors annually.Slafkosky, Jenny. "Fact Sheet: One Year at Pier 15". Exploratorium. The Exploratorium. Retrieved 2014-05-15. The American Museum of Natural History in New York City is both a museum and a research facility with a department in astrophysics. As a natural history museum, it focuses on educating the public about human cultures, the natural world, and the universe, and has many interactive programs and lectures all year round. The Franklin Institute in Philadelphia is one of the oldest centers for science education and research in the United States.

Scientific institutions and societies with physics outreach programs

Canada Perimeter Institute for Theoretical Physics was founded in 1999 in Waterloo, Ontario, Canada, the institute is a center for scientific research, training and educational outreach in theoretical physics.Outreach. (n.d.). Retrieved from http://www.perimeterinstitute.ca/outreach Located in Vancouver, British Columbia, TRIUMF is Canada's national laboratory for particle and nuclear physics and accelerator-based science. In addition to its science mission, the laboratory is committed to physics outreach, offering public tours of its facilities, public talks, an artist in residence program, student fellowships, and other opportunities. The Canadian Association of Physicists (CAP), or in French Association canadienne des physiciens et physiciennes (ACP) is a Canadian professional society that focuses on creating awareness amongst Canadians and Canadian legislators of physics issues, sponsoring physics related events, [physics outreach], and publishes Physics in Canada.

France French Physics Society has a specific section devoted to outreach and popularization of science. The European Physical Society (EPS) is based in France, but works to promote physics and physicists in Europe.

Germany Deutsche Physikalische Gesellschaft (DPG, German Physical Society) is the world's largest organization of physicists. The DPG actively participates in communication between physics and the general public with several popular scientific publications and events such as the "Highlights of Physics" which is an annual physics festival organized jointly by the DPG and the Federal Ministry of Education and Research. This festival is the largest of its kind in Germany and attracts about 30,000 visitors every year.Deutsche Physikalische Gesellschaft e.V. (2013, January 8). Retrieved from http://www.dpg-physik.de/index.html?lang=en.ca/outreach

United Kingdom Institute of Physics is an international charitable institution that aims to advance physics education, research and application.About us. (2014, January 1). Retrieved from http://www.iop.org/about/index.html

United States

American Association for the Advancement of Science