Joly Photometer
Joly Photometer
A comparative light sensor
Simple in its arrangement, the Joly’s Photometer allows for comparisons of light intensities.
Two blocks of translucent material separated by a sheet of opaque foil constitute the kernel of this appealing device.
Two blocks of paraffin wax separated by a sheet of aluminium foil
Laws and principles investigated
experiment: Light intensity - Verify the inverse square distance law for light intensity
|
Place the head of Altay’s Joly Photometer between two sources S1 and S2 of different brightness as shown in the scheme.
Move the light sources until the two blocks of the Joly’s Photometer appear equally bright.
Now verify the inverse square distance law of luminosity.
|
|
Preis in anderen Währungen/ Price in other currencies |
Merkzettel/ Notepad
Warenkorb/Cart
Zur Kasse/ Checkout
Ihr Konto/your acc.