Guidelines

Is time a physical substance?

Is time a physical substance?

Time is a variable and not a substance. It has no mass, no weight, no coordinate, and no origin, and it cannot be detected or even be seen. Yet time is an everlasting existing variable within our known universe. Without time there would be no physical matter, no physical space, and no life.

Is time a substance?

Time is the substance I am made of. Time is a river which sweeps me along, but I am the river; it is a tiger which destroys me, but I am the tiger; it is a fire which consumes me, but I am the fire.

Does time have physical properties?

Einstein’s general theory of relativity established time as a physical thing: it is part of space-time, the gravitational field produced by massive objects. The presence of mass warps space-time, with the result that time passes more slowly close to a massive body such as Earth.

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Can there be change without time?

There can’t be change without time, but there can’t be time without change. If there is absolutely no change at all, then there is no movement at all, there is no heat, no light. It would be a dark, frozen universe with nothing to indicate passage of time.

What would happen if substance did not exist?

A substance can go from being hot to being cold, or from being red to being blue, but the instance of blue in an object cannot similarly take on and lose a wide range of attributes. If substance did not exist it would be impossible for things in any of the other categories to exist.

Is a mixture of two or more phases still a substance?

A mixture of two or more phases of a pure substance is still a pure substance as long as the chemical composition of all phases is the same. Phases of a Pure Substance A pure substance may exist in different phases. There are three principal phases solid, liquid, and gas.

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Does a pure substance have to have one element?

A pure substance does not have to be of a single element or compound. A mixture of two or more phases of a pure substance is still a pure substance as long as the chemical composition of all phases is the same. Phases of a Pure Substance A pure substance may exist in different phases.

Does time really exist?

As Rovelli explains, the apparent existence of time — in our perceptions and in physical descriptions, written in the mathematical languages of Newton, Einstein and Erwin Schrödinger — comes not from knowledge, but from ignorance. ‘Forward in time’ is the direction in which entropy increases, and in which we gain information.