MYTUTOR SUBJECT ANSWERS

602 views

What are the postulates of special relativity?

There are two postulates of special relativity:

1. The laws of physics are invariant in all inertial frames of reference.

What this means is that if we have a description for how physical systems undergo change in one frame F, then that should remain the same in another frame F' as long as F' is only moving at a constant velocity relative to F. Note that a frame of reference is just a set of coordinate axes against which we can measure positions in space and time. Inertial means that it is non-accelerating.

2. The speed of light in a vacuum is the same for all observers, regardless of the motion of the light source.

This means that regardless of how the light source is moving with relative to the observer, the speed of light will be measured as a constant c.

From these postulates we can then derive the consequences such as length contraction, time dilation, universal speed limit etc. 

Srijan P. A Level Maths tutor, GCSE Maths tutor, A Level Further Math...

1 year ago

Answered by Srijan, an A Level Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

147 SUBJECT SPECIALISTS

£20 /hr

Jacob H.

Degree: Physics with a year in Europe (Masters) - Imperial College London University

Subjects offered:Physics, Maths+ 2 more

Physics
Maths
Further Mathematics
.PAT.

“Maths and Physics are very logical subjects. With the correct approach to teaching, anyone can learn maths easily. I'm sure you'd agree.”

£26 /hr

Ayusha A.

Degree: PhD Electrical Engineering (Doctorate) - Newcastle University

Subjects offered:Physics, Maths+ 1 more

Physics
Maths
Further Mathematics

“About me: I am a final year Electrical and Electronic Engineering student at Newcastle University. I took Mathematics, Further Mathematics, Chemistry and Physics as my A-level subjects. I did peer mentoring in university and also have...”

£30 /hr

Mrinank S.

Degree: Engineering (Masters) - Cambridge University

Subjects offered:Physics, Maths+ 3 more

Physics
Maths
Further Mathematics
.PAT.
-Oxbridge Preparation-

“Hey there! I'm a second year undergraduate student at the University of Cambridge, studying Engineering. I am really passionate about using science and maths to make the world around us a better place.  I am a patient and friendly tu...”

About the author

Srijan P.

Currently unavailable: for regular students

Degree: Computer Science (Bachelors) - Cambridge University

Subjects offered:Physics, Maths+ 3 more

Physics
Maths
Further Mathematics
Computing
.STEP.

“About Me I am in my final year of studying Computer Science at the University of Cambridge, which I have thoroughly enjoyed. While I have some previous tutoring experience from school, it is still relatively new to me. However I am ea...”

You may also like...

Posts by Srijan

Given that the equation x^2 - 2x + 2 = 0 has roots A and B, find the values A + B, and A * B.

What are the postulates of special relativity?

Other A Level Physics questions

How do I resolve forces on a slope?

A supertanker of mass 4.0 × 10^8 kg, cruising at an initial speed of 4.5 m s^(–1), takes one hour to come to rest. Assume the force slowing down the tanker is constant.

A student is measuring the acceleration due to gravity, g. They drop a piece of card from rest, from a vertical height of 0.75m above a light gate. The light gate measures the card's speed as it passes to be 3.84 m/s. Calculate an estimate for g.

What is Olbers' Paradox?

View A Level Physics tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok