Optics Flashcards
1
Q
Magnification formula
A
M = Hi/Ho = - Di / Do
2
Q
Illuminance formula
A
Horizontal:
Eh = I / r^2 * cos * α
Vertical:
Ev = I / r^2 * cos (90-α)
Where I is illuminous intensity in cd r is distance α is the angle from light source to lit object
3
Q
Focal length of a curved mirror
A
f = r/2
4
Q
Thin lenses formula
A
1/f = 1/Do + 1/Di
