What are the five behaviors of electromagnetic energy?
Light waves across the electromagnetic spectrum behave in similar ways. When a light wave encounters an object, they are either transmitted, reflected, absorbed, refracted, polarized, diffracted, or scattered depending on the composition of the object and the wavelength of the light.
Which of these is the main source of the electromagnetic energy we use?
3. The fundamental source of electromagnetic radiation is oscillating electric charges, which emit oscillating electric and magnetic fields. 4. The wavelengths of radio waves are longer than those of light waves, which are longer than the wavelengths of X- rays.
What are two natural sources of electromagnetic radiation?
EMF is short for electromagnetic fields or sometimes known as electromagnetic radiation (EMR) or electromagnetic energy (EME). Electromagnetic fields are present everywhere in our environment – the earth, sun and ionosphere are all natural sources of EMF.
What is natural electromagnetic radiation?
Natural EMR/EMFs (cosmic microwaves, infrared, visible light, ultraviolet, gamma rays) and several forms of artificially triggered electromagnetic emissions (such as from light bulbs with thermal filaments, gas discharge lamps, x-rays, lasers, etc.) are not polarized.
What is the difference between radiation and electromagnetic radiation?
The Electromagnetic Spectrum. The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.
What Color Is microwave radiation?
Different wavelengths of light appear to our eyes as different colors. Shorter wavelengths appear blue or violet, and longer wavelengths appear red….What is Color?
| Type of Light | Wavelengths |
|---|---|
| Microwaves | 1 mm – 30 cm |
| Infrared | 700 nm – 1 mm |
| Visible light | 350 nm – 700 nm |
| Ultraviolet | 10 nm – 350 nm |