**Physics Notes - Herong's Tutorial Notes** - v3.24, by Herong Yang

List of Various Distances and Lengths

This section lists various distances and lengths to give us a sense of scale about space.

The list below provides some reference distances and lengths to give us a sense of scale about space:

8.6 ly - Distance to star Sirius 4.2 ly - Distance to Proxima Centauri, a nearest star 149,597,870 km - Average distance from Earth to Sun 4,366,813 km - Circumference of Sun 1,392,684 km - Diameter of Sun 384,403 km - Average distance to Moon 40,008 km - Length of the equator of Earth 12,742 km - Average diameter of Earth 3,475 km - Diameter of Moon 8.85 km - Height of Mount Everest 930 m - Height of the world's tallest building in Dubai 105 m - Length of a soccer field 3 m - Average wavelength of FM radio waves 12.2 cm - Wavelength of microwaves in a microwave oven 24.26 mm - Diameter a US Quarter 0.2 mm - Diameter of horsehair 680 nm - Wavelength of red light 260 nm - Length of the smallest transistor in Pentium 3 chip 17 nm - Diameter of a smallest viruses Porcine circovirus 10 pm - Wavelength of gamma rays 2.2 fm - Diameter of neutron 1 fm - Diameter of proton

Table of Contents

Meter Based on Earth's Meridian

Meter Based on Seconds Pendulum

Meter Prefixes and Other Units

►List of Various Distances and Lengths

Introduction of Frame of Reference

Introduction of Special Relativity

Time Dilation in Special Relativity

Length Contraction in Special Relativity

The Relativity of Simultaneity

Minkowski Spacetime and Diagrams

Introduction of Generalized Coordinates