# Physics: Length Physics> Length

Physics> Length

Length in physics is a physical measure. Learn how the length is denoted in physics, the formula, how to find a length of which letter does the designation, a unit of measurement make.

The length displays the physical dimension of the distance, which in the system units is displayed in meters.

• Discern Si (system units) and conventional units of length.

## Major points

• The SI is a meter.
• One meter is a distance that light overcomes in Vacuum for 1/299 792 458 seconds.
• Units on the meter are designed around the number 10.

## Term

Length - physical distance between objects.

Let's deal with the fact that it is the length of the length in physics. Length - measuring the physical distance. Many characteristics of observation are built on the definition of length. It depends on the distance between objects, the degree of force rendered by the object and the speed of movement. To accurately describe the length, it is necessary to rely on the generally accepted unit of measurement in physics.

It is known that various units of length are used in different parts of the world (for example, in the US - inch). Usually, if we are talking about a regional scale, it does not arise problems. But in collaboration between countries, non-stakes appear. That is why there was a need for a standard unit of measure, adopted at the international level. Thus, the choice fell on the meter, because it works best with the speed of light. One meter calculates the distance that the light overcomes for 1/299 792 458 seconds. All indicators are based on the meter counter 10. For example, 1 km = 1000 m.