- Which photon has the least energy?
- How does a photon move?
- Why photon is massless?
- How do we calculate energy?
- What is the energy of one photon of this radiation?
- What type of energy is a photon?
- Which photon has the highest energy?
- What does a photon look like?
- What is the purest form of energy?
- Does time exist for a photon?
- How large is a photon?
- How do you find energy from frequency?
- Do photons carry energy?
- What color is lowest in energy?
- Can you see a photon?
- How do I calculate power?

## Which photon has the least energy?

Radio waves have photons with the lowest energies.

Microwaves have a little more energy than radio waves.

Infrared has still more, followed by visible, ultraviolet, X-rays and gamma rays..

## How does a photon move?

The most important is oscillating. A photon is a massless wave. The speed it travels in empty space is due to self induction from magnetic to electric for 90 degrees and electric to magnetic for 90 more degrees. Then, the two repeat in opposite polarity.

## Why photon is massless?

If there was a way (there isn’t; special relativity prohibits it) to observe a photon at rest, you would find it massless. All the relativistic mass of the photon comes from it’s energy. In particle physics when we say mass, we usually refer to the rest mass. This is why we usually say that photons are massless.

## How do we calculate energy?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

## What is the energy of one photon of this radiation?

The energy associated with a single photon is given by E = h ν , where E is the energy (SI units of J), h is Planck’s constant (h = 6.626 x 10–34 J s), and ν is the frequency of the radiation (SI units of s–1 or Hertz, Hz) (see figure below).

## What type of energy is a photon?

Photon is the quantum of light and light is electromagnetic wave which carries momentum and energy.

## Which photon has the highest energy?

Gamma raysGamma rays, a form of nuclear and cosmic EM radiation, can have the highest frequencies and, hence, the highest photon energies in the EM spectrum.

## What does a photon look like?

Imagine a shaft of yellow sunlight beaming through a window. Quantum physics tells us that beam is made of zillions of tiny packets of light, called photons, streaming through the air. … Now, Polish physicists have created the first ever hologram of a single light particle.

## What is the purest form of energy?

Unlike any other living thing on Earth, electric bacteria use energy in its purest form – naked electricity in the shape of electrons harvested from rocks and metals.

## Does time exist for a photon?

Yet despite this incredible journey, the photon itself experiences none of what we know as time: it simply is emitted and then instantaneously is absorbed, experiencing the entirety of its travels through space in literally no time. Given everything that we know, a photon never ages in any way at all.

## How large is a photon?

In this way you could say the “size” of photon is basically the width of its wavelength. The wavelength of green light is about 500 nanometers, or two thousandths of a millimeter. The typical wavelength of a microwave oven is about 12 centimeters, which is larger than a baseball.

## How do you find energy from frequency?

where h = 6.626 × 10-34 J·s is called Planck’s constant. Since the energy goes up as the frequency increases, the energy is directly proportional to the frequency. Because frequency and wavelength are related by a constant (c) the energy can also be written in terms of wavelength: E = h · c / λ.

## Do photons carry energy?

Light indeed carries energy via its momentum despite having no mass. … Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum.

## What color is lowest in energy?

RedRed is the lowest energy visible light and violet is the highest.

## Can you see a photon?

In fact, photons are the only things that humans can directly see. A photon is a bit of light. Human eyes are specifically designed to detect light. This happens when a photon enters the eye and is absorbed by one of the rod or cone cells that cover the retina on the inner back surface of the eye.

## How do I calculate power?

Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s). Power may be measured in a unit called the horsepower.