Colour and Colour Filters - GCSE Physics
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- Опубликовано: 11 ноя 2019
- This video introduces colour. There are three primary colours: red, green and blue. This is different to art where the three primary colours are red, yellow and blue. Red and green combine to make yellow, red and blue make magenta and green and blue make cyan. All three colours combined make white light.
Colour filters work by only letting certain frequencies of light through. A coloured filter will only transmit light through with wavelengths that correspond to the same colour as it. The filters absorb every other colour. Therefore colours viewed through a filter of a different colour will appear black and white will appear the same colour as the filter. Two filters of different colours put one before the other will block all incident light.
Thanks for watching,
Lewis
Relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy) (Physics only)
Edexcel (Physics only)
OCR A (Physics only)
OCR B (Physics only)
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dude that ending was dope as helll
That was a clever transition to end card I can't lie.
Thanks
This is surely going to help me for my phisics test tomorrow
He be spittin straight facts
Thank you very much, that is the explanation I needed for my final exam!!!!!
My teacher send me the link of this video to open and learn about it😎
Green filter left the chat
Nothing just the concept of dry cell into a very transparent way🇮🇳
Can I use filters like these to determine the color composition of a mixture of different pigments, such as a mix of different colored paints?
But what makes red filter to be able to stop green and blue lights? Is it something about atomic scale or nanoscale property of filter materials? Wavelength of visible colours hundreds nanometers
I bought a cheap led light drl strip for the car.But the annoying fact is that it has a greenish tint due to the cob leds are emitting blueish light I think and then the light passes a layer of yellow phosphor-but the end result is a deviance from the 4500K drl.Is there a color filter which can sort out the green component and leave a pure white 4500-600K pass through?
Thank you very much for this fantastic explanation
Will the wavelength changes with the filter color?
hello what material are the optical filters used?
Amazing video!
Where did you purchase that?
Amazing video thank you
Nice video really like the explanation
definetly gonna help me pass my assessment
really appreciate it
3:48 How did you draw a perfect line?? Great video btw!
Thank you. This gave me the explanation I was looking for.
Thank you so much this was very helpful!
Great explanation
But how that filter works? How it blocks all colour?
By far the clearest explanation i found.. the way you explained helped in understanding the topic most , at least for me..
what i am actually looking for is the way to turn red light into white or some other color through filter if that's actually possible..
The question in my mind now is that, what happens if you use Secondary color filters in front of RGB.. But I think it's easily derivable now though a practical viewpoint would clear things out way farther.. thanks
Thank you!
Hi interesting. I was wondering what material are the green, red, blue light filters made of or do you have a link where i can buy them?
Love from Australia.
I’m not sure what they’re made from - I bought these ones on Amazon.
so like red filter lets only red light through and blue filter lets blue light through and green filter lets green light through right?
Right
I’m commenting bcos I’m at ur speech😘
Hope you’ve enjoyed it, the talks are brilliant.
what is the "😘" for
If you pass sunlight through a prism, the light is split into all the colors of the rainbow.
If you pass through a prism, white light that was created by combined red, green, and blue light, would the white light split into all the colors of the rainbow or just RBG?
Perfect
Does this effect happen with colored glasses?
Hi I just wanted to know when you are going to add some more videos for aqa a level videos. Particles and radiation and quantum phenomena you are missing some videos.
Hi, at the moment (until the end of December) it’s all out GCSE. Than Jan onwards it’s back to A Level, I know the ones I need to make so it’s all planned out.
@@PhysicsOnline Will you cover all of a-level before June exams?
@@PhysicsOnline Thanks for the help!
@@PhysicsOnline Thanks for the help!
That's just useful
thanks
Will a secondary color filter such as magenta allow red or blue light at a lower intensity to pass through only the magenta component? (Will a magenta filter allow light through if the source is one of the primary colors which comprise it such as blue or red?)
A magenta color filter allows both red and blue light to pass through it. It does not only allow a specific "magenta component" but rather the individual red and blue components that make up the color magenta. The intensity of the light passing through might be slightly lower due to absorption and material imperfections, but both red and blue light will be transmitted by a magenta filter.
nice!
Thank you! Cheers!
i want to implement that on a keyboard so bad
A blue filter lets blue light through but not red or green light
When white light is shined on paper it is reflected
Hellow please someone help me??!!
no
@@tris0913 wow u have the audacity to say no😒☻ go read my first comment and u will c y... it's the last comment..... i don't need any help anymore 🤨
nice video but it's sad to see that you don't have a whole blue brick
Hey
I wanted to know what happens if you get a u grade in AS and a grade in A level (p.s I'm not living in the UK and we take A level in 2 years) I would love it and appreciate it so much if u help me 🙂
Thank u for the video it helped me a lottttt tho 😍😍
My science teacher said that the primary colours of light are red blue and yellow
Nope!
@@PhysicsOnline Okay, also i have a science test tomorrow and I dont understand a part which says, what light would you see in white light with a cyan filter. Can you tell me and explain it please And theres another one which says what light would you see in white light with magenta and red filter. Please explain to me thanks.
@@PhysicsOnline can you please tell me
@@PhysicsOnline Please can you tell me about this because my test is in 30 mins
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Who’s here in 2024 to pass there science exams?💀
Anyone here for school?
me