#physics

contact_support What is the difference between Lorentz's and Einstein's theories of relativity?

Lorentz's theory of relativity was developed in the late 19th and early 20th century, while Einstein's theory of relativity was published in 1905 and... Read more

science How do you calculate the kinetic and potential energy of an object?

Kinetic energy is the energy an object possesses due to its motion, while potential energy is the energy an object possesses due to its position or... Read more

insights What is string theory?

String theory is a theoretical framework in physics that attempts to unify all known forces and particles in the universe. It posits that the... Read more

scatter_plot If I move at the speed of light and throw a stone forward, would it travel faster than light?

According to Einstein's theory of special relativity, the speed of light is an absolute limit that cannot be exceeded. This means that no matter how... Read more

visibility Where does light travel to and where does it stop?

Light travels through space in a straight line at a constant speed of 299,792 kilometers per second (or approximately 186,282 miles per second).... Read more

brightness_7 What is the difference between a planetary nebula and an HII region?

Planetary nebulae and HII regions are two types of nebulae found in space. Planetary nebulae are formed by the ejected outer layers of dying low to... Read more

flight How do jet engines work?

Jet engines are used in aircraft to propel them forward by creating a forward thrust. There are various types of jet engines, but the most commonly... Read more

speed What is the speed of light?

The speed of light is a fundamental physical constant, denoted by the letter c. It is the speed at which electromagnetic radiation (such as light)... Read more

record_voice_over How do vibrating objects produce sound waves that travel through different media, such as air, water, and solids?

Sound is a type of energy that travels through different media, such as air, water, and solids. Vibrating objects, such as vocal cords or the strings... Read more

waves What is the difference between a redshift and a blueshift?

Redshift and blueshift are two important concepts in physics and astronomy. They are related to the Doppler effect, which is the change in the... Read more