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- Feb 10, 2011
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I'm wondering when to use negative/positive signs?
I know that virtual side is always *negative** correct?
real side is always *positive* correct
In lenses, the virtual side is the side that the object is place
In mirrors, the virtual side (since the mirror only has one side where the light reflects from) is the "dull" side ie. side opposite of the convex/concave mirror curve.
In the 1/f = 1/o + 1/i , where does the negative sign go if at all?
Or is it only for m = height image / height object = - distance image / distance object?
I know that virtual side is always *negative** correct?
real side is always *positive* correct
In lenses, the virtual side is the side that the object is place
In mirrors, the virtual side (since the mirror only has one side where the light reflects from) is the "dull" side ie. side opposite of the convex/concave mirror curve.
In the 1/f = 1/o + 1/i , where does the negative sign go if at all?
Or is it only for m = height image / height object = - distance image / distance object?