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Heat & temperature is a property of matter... and not matter.

Photons are unique as they are essentially a packet of energy, but without mass. And, not having mass, they are not considered matter. (Note: it used to be common to refer to the relativistic mass-equivalent of an object's kinetic energy as it's "mass", and disinguish it's invariant mass as rest mass. That terminology was still current when I studied relativity, and there are certainly still books on the shelves that use it. Light and heat do have mass in that sense. But that terminology was confusing, and nowadays it is fashionable among physicists to refer to the old "relativistic mass" as "energy" and to the old "rest mass" as "mass". Light and heat have zero rest mass.)

Essentially, "matter" is the stuff that material objects are made of. Heat is merely the random motion of the parts, and light is not among the parts of material stuff either.

Note- when broken down enough matter is comprised of particles similiar to photons(no Mass, specific function, kinda in between energy and matter) it would not truly be a stretch to consider matter as some form of energy.

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11y ago
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6mo ago

Light and heat are forms of energy rather than matter. Light consists of photons, which are massless particles that carry energy and interact with matter. Similarly, heat arises from the motion of particles at the molecular level and is a measure of the total energy present in a system.

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Q: Why are light and heat not matter?
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Related questions

Is a heat light matter?

A heat lamp or heat light is a device that produces heat but does not consist of matter. It emits infrared radiation that can warm objects without needing a physical source of heat.


Heat and light have mass?

Yes ! Because the heat and light are occupying space and they are matter


Is heat and light retained in colorless liquids?

Some heat, no light (light is not "retained" in any matter).


What does the interaction of infrared light and matter cause?

The interaction of infrared light and matter can cause the molecules in the matter to vibrate and generate heat. This is why infrared light is often used in technologies such as thermal imaging cameras to detect heat signatures.


Is light heat and sound forms of matter?

yes


Does ultraviolet light carry heat?

Ultraviolet (UV) light does not carry heat. UV rays are a form of electromagnetic radiation that is invisible to the human eye and does not produce heat in the way that visible light or infrared radiation does. UV radiation can cause sunburn and skin damage, but this is due to its interaction with the skin, not by carrying heat.


Do heat and light can occupy space?

No, heat and light are forms of energy, not physical matter, so they do not occupy space in the way that physical objects do. They can be present in a space, but they do not have a fixed volume or mass like matter does.


Can matter receive energy?

Yes, matter can receive energy in various forms such as heat, light, electricity, or mechanical energy. When energy is absorbed by matter, it causes particles within the matter to vibrate or move, increasing their kinetic energy.


What is a rapid expansion of matter accompanied by heat and light?

A rapid expansion of matter accompanied by heat and light is typically associated with an explosion. Explosions release a significant amount of energy in the form of heat and light as materials rapidly expand and react.


How does light heat up things?

Light transfers its energy to an object by being absorbed and converted into heat. When light waves strike an object, the energy is converted into thermal energy, causing the object's molecules to vibrate and generate heat. The more light energy absorbed by an object, the hotter it becomes.


What elemt cannot be classified as a substances?

The absence of matter is vacuum. Some examples that are not matter include: light, heat, sound, energy, gravity, time, love and happiness.


Is flame considered a matter?

Flame is not considered a matter. It is a form of energy released during combustion, typically involving a chemical reaction that produces heat and light.