Gamma-rays are the most energetic form of electromagnetic radiation, with over 10, times more energy than visible light photons. If you could see Gamma-rays, the night sky would look strange and unfamiliar. The familiar sights of constantly shining stars and galaxies would be replaced by something ever-changing. Your Gamma-ray vision would peer into the hearts of solar flares, supernovae, neutron stars, black holes, and active galaxies.
Gamma-ray astronomy presents unique opportunities to explore these exotic objects and the most energetic phenomena they produce.
Try this! Give me additional resources! Show me related lesson plans. The electromagnetic EM spectrum is the range of all types of EM radiation. The other types of EM radiation that make up the electromagnetic spectrum are microwaves , infrared light , ultraviolet light , X-rays and gamma-rays.
You know more about the electromagnetic spectrum than you may think. The image below shows where you might encounter each portion of the EM spectrum in your day-to-day life. Radio: Your radio captures radio waves emitted by radio stations, bringing your favorite tunes. Radio waves are also emitted by stars and gases in space. Microwave: Microwave radiation will cook your popcorn in just a few minutes, but is also used by astronomers to learn about the structure of nearby galaxies.
Infrared: Night vision goggles pick up the infrared light emitted by our skin and objects with heat. In space, infrared light helps us map the dust between stars. Visible: Our eyes detect visible light. Fireflies, light bulbs, and stars all emit visible light. Ultraviolet: Ultraviolet radiation is emitted by the Sun and are the reason skin tans and burns.
Tritium has 1 proton and 2 neutrons 3. The helium nucleus has a mass of 3. In this reaction some mass, 0. We can convert any other unit of energy into joules or kilojoules kJ. There are many online conversions programs to help with the calculations.
In the last lecture you saw that sun, like any other hot object, releases its energy in discrete "rays" that have some properties of particles and some properties of waves. We call it electromagnetic radiation. A single wave is measured from two consecutive points, such as from crest to crest or from trough to trough Figure 1.
Figure 1. The wavelength of a single wave is the distance between two consecutive points of similar position two crests or two troughs along the wave. Visible light constitutes only one of many types of electromagnetic radiation emitted from the sun and other stars. Scientists differentiate the various types of radiant energy from the sun within the electromagnetic spectrum. The electromagnetic spectrum is the range of all possible frequencies of radiation Figure 2. The difference between wavelengths relates to the amount of energy carried by them.
Figure 2. The sun emits energy in the form of electromagnetic radiation. This radiation exists at different wavelengths, each of which has its own characteristic energy. All electromagnetic radiation, including visible light, is characterized by its wavelength. Each type of electromagnetic radiation travels at a particular wavelength. The longer the wavelength or the more stretched out it appears in the diagram , the less energy is carried.
Short, tight waves carry the most energy. This may seem illogical, but think of it in terms of a piece of moving a heavy rope. It takes little effort by a person to move a rope in long, wide waves. To make a rope move in short, tight waves, a person would need to apply significantly more energy. The electromagnetic spectrum Figure 2 shows several types of electromagnetic radiation originating from the sun, including X-rays and ultraviolet UV rays.
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