The brightest events in the Universe since the Big Bang; extremely powerful flashes of gamma rays that are believed to originate in massive supernova events. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...

Electromagnetic radiation present between ultraviolet and gamma rays on the electromagnetic spectrum, with wavelengths from about 0.01 to 10 nanometres. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...

By the end of this learning object, the student will be able to: Recognize the three types of nuclear radiation.

During the 1950s nuclear trepidation was reaching extreme levels. In an attempt to limit the arms race the super powers signed a test ban treaty that came into effect in 1963. To make certain that there were no violations; America...

If only we were all given a window so a doctor could look inside us when we were ill.Think of the operations that would save! Luckily there are now many ways we can see what is happening deep inside our bodies by using electromagnetic...

In this video we cover the following: - The 7 different types, and order, of the waves in the electromagnetic spectrum - The phrase ROYGBIV to help you remember the order of colours in the visible light spectrum - The inverse...

This video covers: - How x-ray machines work - How gamma rays are used to sterilise food and medical equipment - The pro's and con's of using radiation Exam board specific info: AQA - Everything is relevant to your course! IGCSE Edexcel...

This video covers: - Why radiation is harmful - How ionising radiation can cause cancer - How radiotherapy can use gamma rays or beta radiation to treat cancer - How medical tracers work General info: - Suitable for all GCSE and IGCSE...

This video covers: - How radioactive decay works - What activity means - The two definitions of half-life - How to show radioactive decay on a graph - How we can find the count rate with a Geiger–Müller tube - Example calculation for...

This video covers: - The idea that radioactive materials contain unstable isotopes - What alpha, beta, gamma and neutron radiation is - How ionising and penetrating they are General info: - Suitable for all GCSE and IGCSE courses -...

This video will explain the electromagnetic radiation spectrum, what it is, and how it can be used to observe space objects.

The video discusses the production of electromagnetic waves from atoms and nuclei. It covers different examples of producing radio waves, microwaves, x-rays, gamma rays, infrared radiation, visible light, and ultraviolet light. The video...

What happens when black holes collide? What is the speed of gravity? There are so many weird questions related to gravitational waves.

This lecture video discusses the health risks associated with exposure to electromagnetic waves on the electromagnetic spectrum. The video covers different types of electromagnetic radiation, from microwaves to X-rays and gamma rays, and...

Dr. Zarana Patel, a portfolio lead scientist at NASA's Johnson Space Center, is responsible for management and scientific oversight of degenerative tissue risk of space radiation. This is part one of a five-part series on the hazards of...

NSF-funded Physics Frontiers Centers (PFCs) are pushing the frontiers of science across the disciplines of physics. The Kavli Institute for Cosmological Physics (KICP) tackles the big questions in cosmology — dark matter, dark energy and...

In episode 54, Jordan and Charlie explore a new nuclear reaction imaging technique designed to detect the presence of “special nuclear materials” concealed in cargo containers. This method relies on a combination of neutrons and...

Former NIST physicist Kent Irwin discusses the NIST transistion edge sensor, a special integrated circuit made from superconducting materials, and how it is being used to study everything from the Big Bang to the safety of nuclear plants.

The video explores the mysteries of high energy astronomy, focusing on gamma ray bursts and their origins. It discusses the evolution of our understanding of the universe, from debates about the scale of the galaxy to the discovery of...

Chernobyl is an HBO mini-series that reintroduced the world to the nuclear catastrophe that occurred on April 26th, 1986 at the Chernobyl nuclear reactor in the Soviet Union, in what is now Ukraine. The series followed the tragedy that...

An announcement of recent multi-messenger astrophysics findings led by the National Science Foundation’s IceCube Neutrino Observatory at the South Pole. Hosted by NSF Director France Córdova, the briefing features leading astrophysicists...

This video discusses how electromagnetic waves can interact with charged particles, specifically electrons in atoms. It explains how electromagnetic waves can cause electrons to absorb energy and jump to higher energy levels or emit...

The battle is on for the title of "America's Scientist Idol." Videotaped at the 2013 annual meeting of the American Association for the Advancement of Science, this "game show" pits six scientists against each other to see who can best...

This video is a lecture that explains the concept of background radiation, which is a type of ionizing radiation that humans are exposed to every day but at low levels. The video discusses the four main types of ionizing radiation, which...