Topic

Physics

A collection of 3 issues

Light Sails

Light sails, aka Solar sails is method to propel a spacecraft using light. The light from the Sun exerts a radiation pressure on these sails that accelerates the spacecraft. However, the magnitude of force is quite low. A sail of dimensions 800m x 800m will experience a force of about

Temperature Inversion

Temperature inversion is a meteorological phenomenon where a deviation occurs from normal change of an atmospheric property with altitude. It usually refers to the inversion of the thermal lapse rate. The lapse rate is the rate at which temperature falls with altitude. The temperature drops as you gain altitude due

Half Life

Radioactive molecules lose energy by radiation from its nuclei. This is known as radioactive decay and is a stochastic process at an atomic level. It is impossible to predict when an atom will decay but for a significant number of identical atoms it is possible to predict the average amount