The pinhole camera didn’t work at first so I shoved it up a jumper sleeve then covered my jumper with another cloth. Then I covered the screen with a circle of greaseproof paper which made it work.
🙂
When it is bright the iris contracts making the pupil smaller allowing less light into the eye but when it is dark the iris relaxes which makes the pupil larger so more light can get into the eye to let you see.
When light hits the pupil, the pupil grows smaller,but it depends how bright the light is, so if the light was a torch it would grow smaller then if the light was a lamp.
The pin hole camera didn’t work at first but we got it to work by put thicker card over the end and making the hole bigger. We turned the lights off and we also put black card inside the tube to make the pin hole camera work, we did found out we didn’t need black card but it doesn’t work as well, because it scattered the light too much.
Hi Saffy, it sounds like you don’t have Powerpoint installed on your computer. Perhaps try on another computer that might have Powerpoint installed or if you have Windows 10 on your computer, you can install PowerPoint Mobile to view presentations. If you don’t have much luck, you’ll need to do to your own research into how the eye works.
The pupil becomes smaller when facing the light and gets bigger when facing away from the light. 🙂
It does! Any ideas why this might be?
The pinhole camera didn’t work at first so I shoved it up a jumper sleeve then covered my jumper with another cloth. Then I covered the screen with a circle of greaseproof paper which made it work.
🙂
I’m glad you got it to work in the end! Keep up the good work Joseph.
The pupil becomes bigger when facing away from the light then when facing towards the light the pupil becomes smaller.
It does! Any ideas why this might be?
When you shone the torch at your eye the pupil becomes smaller where as when you take the torch away the pupil grows in size again.
That’s right, Ellie!
Have just found this…https://www.bbc.co.uk/teach/supermovers/ks2-science-light-reflection-and-shadows-from-the-tardis/zdchd6f
When it is bright the iris contracts making the pupil smaller allowing less light into the eye but when it is dark the iris relaxes which makes the pupil larger so more light can get into the eye to let you see.
An excellent explanation Ted, using scientific terminology.
When light hits the pupil, the pupil grows smaller,but it depends how bright the light is, so if the light was a torch it would grow smaller then if the light was a lamp.
That’s right Mollie!
The pin hole camera didn’t work at first but we got it to work by put thicker card over the end and making the hole bigger. We turned the lights off and we also put black card inside the tube to make the pin hole camera work, we did found out we didn’t need black card but it doesn’t work as well, because it scattered the light too much.
I’m glad you got it to work in the end, great perseverance, Aidan!
When the light is shone in the eye the iris shrinks To let less light in but when it’s in the dark the iris grows to let more light in
That’s right, Aidan!
When my mom got closer to the light, her pupil became smaller and when she moved away the the pupil became larger again.
All because of what you explained above.
Hi Mrs Brown me and Ella are trying to do a project about the eye but we cant read the power point
Hi Saffy, it sounds like you don’t have Powerpoint installed on your computer. Perhaps try on another computer that might have Powerpoint installed or if you have Windows 10 on your computer, you can install PowerPoint Mobile to view presentations. If you don’t have much luck, you’ll need to do to your own research into how the eye works.