Why is the redshift important?

The redshift is an important piece of evidence for the big bang theory. If we look at the visible region on the electromagnetic wave spectrum, we will see there is red light on the left and there is violet on the right. Red light has a longer wavelength than violet light, so this means when a galaxy moves away from us, the wave will 'stretch'. This means the wavelength will increase and galaxy appears red. This is good evidence for the big bang theory, as it can only be explained by the idea that the universe is explanding.

Answered by Laxshana C. Physics tutor

3899 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

A mass of 2kg is dropped from rest at a height of 10m. i) What is the initial GPE of the mass? ii) What is the final velocity of the mass when it hits the ground?


A student of mass m=50kg runs an experiment. He throws a ball of mass m = 400g from a height h = 20m. What will be the speed of the ball he records just before it touches the ground?


Define the term ultrasound wave


A car of mass 1000 kg is travelling at 20 (m/s). The car crashes into a tree, and comes to a complete halt in 0.05s. Calculate the force acting on the car during the collision.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences