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# AS phyiscs coursework... watch

1. hellooo people!! my experiment is about the refractive index of glass. im stuck on the intro where I have to explain how the refractive index of glass is used in everyday life (eg opticians). so anyone know what I could possible throw in??
2. (Original post by naseem hossen)
hellooo people!! my experiment is about the refractive index of glass. im stuck on the intro where I have to explain how the refractive index of glass is used in everyday life (eg opticians). so anyone know what I could possible throw in??
These may help
3. you could mention how refracting light through glass was key in discovering that white light was composed of a range of different wavelengths of light.

DvD players use a laser to burn information on to a disk (hence the name: burn CD or DVD)

Blu ray uses a blue laser as opposed to normal dvd players that use a red laser. blue light has a higher frequency than red, thus can carry more information through the electromagnetic radiation that the laser gives off (i.e. the blue rays of light)
4. Hey there, I'm also studying physics but at gcse level and have come across this concave/convex lenses stuff and wondering is it similar to what you study at physics AS level
5. (Original post by Midnight1811)
Hey there, I'm also studying physics but at gcse level and have come across this concave/convex lenses stuff and wondering is it similar to what you study at physics AS level
I don't know how much detail you go into at GCSE, but at A level (for edexcel anyway) it's just a more mathematical approach to it. We didn't (well I didn't ) really even know what the difference between concave and convex was.
6. (Original post by naseem hossen)
hellooo people!! my experiment is about the refractive index of glass. im stuck on the intro where I have to explain how the refractive index of glass is used in everyday life (eg opticians). so anyone know what I could possible throw in??
It is also used in something to do with measuring something in wine . I think the device is called a refractometer.

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