physics nerd?

[Angelwinged_Devil]

do we have anyone here? I need a physics nerd who knows about powerful light and shadows XD plz?

[ArcticWolf]

Ask me. I'm not a physicist, just a plain geek~nerd, but I'll try to help.

[spartan27583]

I know Plover from Inquisition is taking AP physics right now in school. He should be able to answer your physics question.

[DkySven]

I know a little about Physics. (actually it's my best subject at school but I'm only in the 3th class yet). What's your question?

[Ulmanyar]

I'm studying engineering physics, but I'm just on my 2nd year, although I actually have studied some optics. Give us your question, and we could probably give you an answer..

[Angelwinged_Devil]

oh well, I have this projectorlamp and I want to Light it on a wall and put something in front of it so it will write it on the wall.
Unfortunately inside the lamp the light is some sort of reflection layer which casts the light in every angle, so when I try to put something in front of it I can hardly see the shadow on the wall.
It's a project spotlight thingy which is often used at buildsites

[DkySven]

Buy a new light for in the lamp. Other option is to buy expensive mirrors to make the lamp shine in one direction.

[Angelwinged_Devil]

Originally Posted by asdfghs

Buy a new light for in the lamp. Other option is to buy expensive mirrors to make the lamp shine in one direction.

I have to use it for tomorrow XD

my thought was to put a box on the end so it did light in one direction, at the end of the box there would be the picture of what I wanted to write, maybe it will be written in the light instead though XD

[ArcticWolf]

Originally Posted by Angelwinged_Devil

I have to use it for tomorrow XD

my thought was to put a box on the end so it did light in one direction, at the end of the box there would be the picture of what I wanted to write, maybe it will be written in the light instead though XD

Light has to be aligned, or else the projection would result in a blurry image.

Hold on, I KNOW I have something about optics in my archive.

[Ulmanyar]

You may end up with lower intensity, but try this for better results:

First, make a thin slit and put it on front of the lamp (not too close, though, because of the heat!). Perhaps you could have a box around the lamp?


Then make your letters quite large, so that they can be put half a meter after the slit and still be big enough on the wall. This is to reduce diffraction and dispersion, otherwise all your letters would be all fuzzy and blurred, if visible at all.

Hopefully the result will be better, and tell me if I need to be more precise in my explanation Good luck!