- #1
alejandra
- 4
- 0
I am an artist. I am trying to cast a large sharp (in focus) shadow through a piece of lace onto a wall. It either turns out large and blurry if it is far from the wall, or sharp and small if it is closer to the wall. I have tried the following experiments:
1. Increased the focus and direction of the lamp. This improved the contrast of the shadow, but not the sharpness.
2. Reflected the light with a mirror. This allowed the piece of lace to be further from the wall, but in order to be sharp it still needed to be small, a 1 to1 size ratio.
3. Tried to focus the shadow with an eyeglass lens. This did nothing. I don't have a magnifying glass, but this is my next experiment. Perhaps also a convex lens?
Does anyone have any advice about how to cast a large, in focus shadow with a spotlight? What physics is going on here?
Thanks,
Alejandra
1. Increased the focus and direction of the lamp. This improved the contrast of the shadow, but not the sharpness.
2. Reflected the light with a mirror. This allowed the piece of lace to be further from the wall, but in order to be sharp it still needed to be small, a 1 to1 size ratio.
3. Tried to focus the shadow with an eyeglass lens. This did nothing. I don't have a magnifying glass, but this is my next experiment. Perhaps also a convex lens?
Does anyone have any advice about how to cast a large, in focus shadow with a spotlight? What physics is going on here?
Thanks,
Alejandra