Physics

>

KS3

Energy and Matter

Question

Why do we see different colours?

3 years ago

·

3 Replies

·

1496 views

M

Mabelle Witting


3 Answers

Dr C Profile Picture
Dr C Verified Sherpa Tutor ✓

A very experienced teacher with a natural empathy for students

We have special cells in our eyes called cones that are sensitive to different colors, effectively sending electrical impulses to our brain which processes them as colour. The only way we know we are seeing the same 'colour' as every one else is through words or language and colour vision testing!

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Pauline H Profile Picture
Pauline H Verified Sherpa Tutor ✓

Qualified & Experienced Teacher and AQA marker of Science GCSE's

17 reviews

There are two parts to this answer - we see colours as light reflects from objects. That light ray then eneters the eye focused by refraction in the cornea and the lens hitting the retina. The retina at the back of the eye has specialised cells called rods and cones that trigger a trichemical reaction in the eye which is then interpreted by the eye where we 'see' the colour.

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Lucy S Profile Picture
Lucy S Verified Sherpa Tutor ✓

Here to help you reach the grades you need for your future

Hi Mabelle, we see different colours because visible light travels as a waves with different wavelengths. The receptors in our eyes send a signal to our brain when they absorb light with these different wavelengths and our brain interprets these signals to give us information about the colour of objects in front of us. Different objects are seen as different colours as a result of the colours (wavelengths) of light that they absorb or reflect into our eyes.

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.

Think you can help?

More Physics KS3 Questions
Sherpa Badge

Need a KS3 Physics tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find a KS3 Physics Tutor