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I believe this is usually stated as "It has no mass".All particles that move at the speed of light (so basically, photons and gravitons) have zero mass. That's the only way they can move at the speed of light; a massive object can only move at sub-light speed. To accelerate a massive particle (i.e., a particle with ANY positive mass) up to the speed of light would require an infinite amount of energy.
The mass we are talking about is what some older text books, as well as popular science books, often call the "rest mass" - though modern scientists try to avoid this term.
What else can I help you with?
Is light from a lamp matter?
No, all light regardless of source is electromagnetic radiation. It is not matter.
Is light considered to be matter?
No, light is not considered to be matter. It is a form of electromagnetic radiation that does not have mass or occupy space like particles of matter do.
What what are the characteristics of matter?
oxygen made of molecules and atoms related to light and electromagnetic radiation has mass
Is a photon light a form of electromagnetic radiation?
Yes, a photon of light is a form of electromagnetic radiation.
Are light rays matter?
No, light rays are not considered matter. They are forms of electromagnetic radiation that do not have mass or occupy space in the same way that matter does.
What is the transfer of energy that does not require matter called?
The transfer of energy that does not require matter is called radiation. Radiation can propagate through empty space, such as in the form of electromagnetic waves like light or heat.
Form of energy does not require matter for traveling through space?
Electromagnetic radiation, such as light, does not require matter for traveling through space. It can propagate through a vacuum because it consists of waves of electric and magnetic fields.
Example of something that is not matter?
Gravity is a main thing that is not matter.
Is light in an incandescent bulb matter?
Yes, light in an incandescent bulb is a form of electromagnetic radiation, not matter. The light is produced by the heating of a tungsten filament in the bulb, causing it to emit visible light.
Is light the same thing as electromagnetic radiation?
Yes, visible light makes up the middle region of the Electromagnetic spectrum. Therefore, light is a form electromagnetic radiation.
How does electromagnetic radiation behave?
Electromagnetic radiation can behave either as a wave or a particle. A wave particle is duality. Electromagnetic energy results from acceleration of a charge EM radiation can travel through a medium or vacuum.
How does radiation move?
Radiation moves in the form of electromagnetic waves or particles. Electromagnetic radiation, such as light and microwaves, travels in waves and does not require a medium to propagate. Particle radiation, such as alpha and beta particles, move in straight lines and can be absorbed or scattered by matter.
