The atoms are ionized. When the electrons “calm down” they fall back into their home level and emit particles of light called photons (packets of energy) Light also travels in waves that travel through space – this is called electromagnetic radiation. Light behaves like a stream of particles.
Why is light sometimes referred to as electromagnetic radiation?
Electromagnetic waves are produced by the motion of electrically charged particles. These waves are also called “electromagnetic radiation” because they radiate from the electrically charged particles.
Why do we describe light as electromagnetic radiation quizlet?
Choose the correct description of what do we mean when we say that light is an electromagnetic wave and the relationship among wavelength, frequency, and speed for light waves. We say that light is an electromagnetic wave because light is a oscillation of electric and magnetic fields.
What is light electromagnetic radiation?
Electromagnetic (EM) radiation is a form of energy that is all around us and takes many forms, such as radio waves, microwaves, X-rays and gamma rays. Sunlight is also a form of EM energy, but visible light is only a small portion of the EM spectrum, which contains a broad range of electromagnetic wavelengths.
Is electromagnetic radiation also known as light?
In terms of the modern quantum theory, electromagnetic radiation is the flow of photons (also called light quanta) through space. Photons are packets of energy hν that always move with the universal speed of light.
Why do we say that light is an electromagnetic wave What is the relationship among wavelength frequency and speed for light quizlet?
We say that light is an electromagnetic wave because light is a vibration of electric and magnetic fields. Because all electromagnetic waves travel at the speed of light, the product of their frequencies and wavelengths is always the speed of light.
Which of the following are forms of light electromagnetic radiation )?
Other types of light include radio waves, microwaves, infrared radiation, ultraviolet rays, X-rays and gamma rays — all of which are imperceptible to human eyes. All light, or electromagnetic radiation, travels through space at 186,000 miles (300,000 kilometers) per second — the speed of light.
How re the energy and wavelength of electromagnetic radiation related? As wavelength increases, frequency decreases and so does energy. … An electron emits a photon and drops to a lower energy state, losing energy. The photon’s energy is equal to the energy difference between the two levels.
In his formulation of electromagnetism, Maxwell described light as a propagating wave of electric and magnetic fields. More generally, he predicted the existence of electromagnetic radiation: coupled electric and magnetic fields traveling as waves at a speed equal to the known speed of light.