# What does absolute zero refer to?

Absolute zero is the lowest temperature possible. At a temperature of absolute zero there is no motion and no heat. Absolute zero occurs at a temperature of 0 degrees Kelvin

What does absolute 0 refer to?

Absolute zero, temperature at which a thermodynamic system has the lowest energy. It corresponds to −273.15 °C on the Celsius temperature scale and to −459.67 °F on the Fahrenheit temperature scale.

What is the best definition of absolute zero? : a theoretical temperature characterized by complete absence of heat and motion and equivalent to exactly −273.15°C or −459.67°F.

Why do they call it absolute zero?

Thermal motion is the driving mechanism behind temperature, so that temperature is also independent of frame. … This point, where all the atoms have been completely stopped relative to each other, is known as “absolute zero” and corresponds to the number zero on the Kelvin temperature scale.

## What is the definition of absolute zero quizlet?

Absolute zero is the lowest possible temperature. It is the point at which the atoms of a substance transmit no thermal energy – they are completely at rest. It is zero degrees on the Kelvin scale, which translates to -273.15 degrees Celsius or -459.67 degrees Fahrenheit.

## Does time stop at absolute zero?

But even if you take the conventional view of the flow of time, motion does not stop at absolute zero. This is because quantum systems exhibit zero point energy, so their energy remains non-zero even when the temperature is absolute zero.

## How did they find absolute zero?

The first, and simplest, demonstration of the existence of an ‘absolute zero’ temperature was found in the behavior of gas pressure vs. temperature. … It is the Kelvin temperature scale that defines its zero point as absolute zero, and is calculated by adding 273 degrees to the Centigrade temperature.

## What is an example of absolute zero?

Absolute zero is zero degrees Kelvin, equal to -273.15 degrees Celsius and -459.67 degrees Fahrenheit. The coldest known place in the universe is the Boomerang Nebula, where the temperature is -272° Celsius.

## What is the value of absolute zero class 11?

Absolute Zero is defined as minimum absolute temperature of an ideal gas. If we plot pressure versus temperature we get a straight line and if weextend theline backwards to the x-axis as shown in the graph below. The minimumtemperature is found to be 273.15 °C (experimentally) andthis value is known as absolute zero.

## What is meant by absolute zero pressure?

Absolute pressure is the measure of pressure with respect to absolute zero pressure, which is the pressure of a perfect vacuum. The absolute pressure measurement is required for the ideal gas law in the same sense that temperature must be represented by its absolute unit, the Kelvin.

## Is 0 Kelvin possible?

Summary: On the absolute temperature scale, which is used by physicists and is also called the Kelvin scale, it is not possible to go below zero – at least not in the sense of getting colder than zero kelvin. … At zero kelvin (minus 273 degrees Celsius) the particles stop moving and all disorder disappears.

## Who discovered absolute zero?

In 1848, the Scottish-Irish physicist William Thomson, better known as Lord Kelvin, extended Amontons’ work, developing what he called an “absolute” temperature scale that would apply to all substances. He set absolute zero as 0 on his scale, getting rid of the unwieldy negative numbers.

## What is the hottest thing in the universe?

The dead star at the center of the Red Spider Nebula has a surface temperature of 250,000 degrees F, which is 25 times the temperature of the Sun’s surface. This white dwarf may, indeed, be the hottest object in the universe.

## What does zero Kelvin represent quizlet?

Zero on the Kelvin scale represents -273 C and is called absolute zero. Heat is thermal energy moving from a warmer object to a cooler object. The amount of energy required to raise the temperature of 1 kilogram of a material by 1 Kelvin.

## What is an absolute zero temperature?

Absolute zero is the lowest temperature possible. At a temperature of absolute zero there is no motion and no heat. Absolute zero occurs at a temperature of 0 degrees Kelvin, or -273.15 degrees Celsius, or at -460 degrees Fahrenheit.

## How do you determine the absolute zero temperature?

To solve for the value of absolute zero, use the equation for a line, y = mx + b. Absolute zero is the temperature at which the gas’s pressure equals zero. This is the line’s x-intercept. To calculate this value, set y = 0, substitute in the value of the slope, and solve for x.