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What type of energy does an element need to absorb to emit light?
Many different types of energy can do this. Heat will cause anything to emit blackbody radiation and if there is enough heat the blackbody radiation will overlap the visible light spectrum and the object will be incandescent. To emit light as a narrow spectral line requires raising electrons in the element to higher energy orbitals and allowing them to fall back, emitting photons. The type of energy that can do this can be of many sorts: light, chemical, electrical, etc.
What contains all wavelengths of light?
answ2. Well, not many. Even a fluorescent lamp does not give out all colours, but our eye compensates for that.o If you hold the shiny side of a CD or DVD towards a fluro lamp, you'll only see a few discrete colours - green, blue, violet, red and so on. Depends on the lamp.o You've just used your CD as a diffraction grating (similar to a prism). And revealed the colours emitted by the phosphors in the fluoro tube.o If you repeat the experiment using either sunlight or an incandescent light as the light source, you'll see an almost continuous spectrum.A1. Because when something is something it does it.
What effect does earth atmosphere have on many forms of electromagnetic radiation?
Earth's atmosphere affects electromagnetic radiation by absorbing, scattering, and reflecting various wavelengths. For instance, the ozone layer absorbs harmful ultraviolet radiation, while the atmosphere scatters shorter wavelengths like blue light, giving the sky its color. Additionally, water vapor and other gases can absorb infrared radiation, impacting climate and temperature. This interaction is crucial for understanding phenomena like climate change and the behavior of satellites in orbit.
How are radioactive elements harmful?
Radioactive elements can be harmful because they emit radiation that can damage cells and DNA, leading to mutations that may cause cancer or other health problems. Exposure to high levels of radiation over a short period or low levels over a long period can increase the risk of developing radiation-related illnesses.
What are 3 forms of Electromagnetic Radiation with a wavelength greater than visible light?
Infrared is one, radio waves are another and many include microwaves as a third but microwaves are used for communications and are a form of radio wave. Wavelengths between radio waves and infrared are called TeraHertz radiation. Radio waves start at very long wavelengths LF or low frequency defined as 30kHz to 300kHz, MF or medium frequency from 300kHz to 3MHz, HF or high frequency from 3MHz to 30MHz, VHF or very high frequency from 30MHz to 300MHz, UHF or ultra high frequency from 300MHz to 3GHz and SHF from 3GHz to 30GHz. After that they are normally just called microwaves. Many microwave ovens operate near 2.4GHz which is only UHF.
Which elements emit radiation in the visible part of the spectrum?
Radioactive elements such as radium or uranium emit radiation. There are three types of "radiation"; alpha particles (which are solitary electrons), beta particles (helium nuclei, consisting of two protons and two neutrons) and "gamma radiation", which is high-energy electromagnetic energy similar to light or X-rays.
What things are electromagnetic radiation emitting from?
Electromagnetic radiation is emitted from many different things. Some of the things that emit electromagnetic radiation are microwaves, x-rays and radios.
How many radiation do radioactive material emit?
Radioactive materials emit particles or energy in the form of radiation. The amount of radiation emitted by a radioactive material depends on its specific properties and decay process. Radiation is typically measured in units such as becquerels (Bq) or curies (Ci), which indicate the rate of radioactive decay.
What are the main advantages of studying objects at many different wavelengths of radiation?
Studying objects at many different wavelengths of radiation allows researchers to gain a more complete understanding of their properties and behavior. Different wavelengths reveal different aspects of an object, such as its temperature, composition, and magnetic fields. By combining data from multiple wavelengths, scientists can construct a more comprehensive picture of the object's characteristics.
What is the process by which some substances spontaniously emit radiation?
The process by which some substances spontaneously emit radiation is called radioactive decay. During this process, unstable atomic nuclei release particles (such as alpha or beta particles) or electromagnetic radiation (such as gamma rays) to achieve a more stable configuration.
How is it possible for a single electron to produce so many different wavelengths and frequencies?
A single electron can produce different types of radiation. Radiation, frequency, and wavelength all rely on each other. If an electron can produce multiple types of radiation, it can also produce different wavelengths and frequencies, because the wavelengths and frequencies are dependent on the radiation type.
How do hot objects use light?
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Do cell phones give off radiation when turned off?
If the radios are off in the phone then it wil emit no RF radiation.
Do all atoms have beta decay?
No. Many atoms do not decay at all. Many that do undergo alpha decay. A few atoms emit neutron radiation.
How can you prove that all living things on earth emit radiation?
There are many forms of radiation. The radiation people usually think of is the radiation associated with nuclear decay; the radiation that comes from an X-ray machine or a nuclear bomb. However, radiation includes thermal radiation. This is the emission of heat. Since almost all chemical reactions result in the production of heat, and the metabolism of any living creature is essentially a very complex inter-related series of chemical reactions, all living creatures emit radiation: Living creatures require food ---> Food is broken down into nutrients and absorbed (this is a chemical reaction) ---> Chemical reactions generally produce heat ---> Living creatures radiate heat ---> Living creatures emit radiation
Why is the electromagnetic spectrum such as radio waves used to study space?
Most stars and many other objects in space emit radio and microwave radiation. Even the big bag emitted electromagnetic radiation.
How do speed of different forms of light compare?
How many different forms of light do you have ? ? The speed of all wavelengths of electromagnetic radiation is the same, at least in vacuum.
