What is the definition of a photon?
The basic properties of photons include: They have zero mass, and no rest energy. They exist only as moving particles. They are elementary particles, despite not having rest mass.
Which of the following occur as the energy of a photon increases?
What are the effects of increasing the photon’s energy? The speed increases.
What is the formula for calculating the energy of a photon?
E=hf=hcl(energy of a photon) E=h f=h c l (energy of a photon) , where E is the energy of a single photon and c is the speed of light. Energy in eV can be useful when working with small systems. These units have Planck’s constant h=4. 14 x 10-15 eV s.
What are three examples of ways you use electromagnetic energy?
Artificially generated electromagnetic radiation is a part of everyday life: microwave ovens heat food, planes fly by radar waves, television sets are able to receive electromagnetic waves transmitted from broadcasting stations and heaters give warmth.
How safe are the electromagnetic waves?
It is clear that very high levels of electromagnetic radiation can cause health problems in the short term. There is no evidence that low-level electromagnetic fields are harmful to human health, despite extensive research.
In what ways are EM waves harmful to us?
Over-exposure to certain types of electromagnetic radiation can be harmful. Over-exposure to certain types of electromagnetic radiation can cause serious damage to your body. For example, microwaves can cause internal heating to the tissues of the body. Infrared radiation causes skin to become hot and feels like heat.
What wavelengths are dangerous?
Ultraviolet (UV) (Wavelength 10-7 – 10-8 meters) UV-C rays are the most harmful and are almost completely absorbed by our atmosphere.
Can we live without em waves?
Radio, Microwave, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays. There is no EM wave, so there is no sight. There is no transfer of energy from sun to earth, therefore there is no life.
Are higher frequency waves more dangerous?
Experts on the biological effects electromagnetic radiation have found that radio waves are safer at higher frequencies than they are more dangerous.
Extremely high-frequency energy, such as Xrays, can behave differently and pose a risk to your health. )