- #1
RickyWong
- 2
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Just a check here...
I'm doing some ray diagram practice for optics and I've hit a road block. Hyperphysics is stating that for a concave mirror o is usually negative due to it measured against the direction of light propagation when applied to the mirror equation (below).
\frac{1}{o}+\frac{1}{i}=\frac{1}{f}
But Hecht, says that if it is a real object to the left of the mirror, it should be positive (which incidentally gives me the correct answer to a question I'm attempting)
Is Hyperphysics wrong? or have I misinterpreted it?
here's the link:
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/mirray.html#c4
I'm doing some ray diagram practice for optics and I've hit a road block. Hyperphysics is stating that for a concave mirror o is usually negative due to it measured against the direction of light propagation when applied to the mirror equation (below).
\frac{1}{o}+\frac{1}{i}=\frac{1}{f}
But Hecht, says that if it is a real object to the left of the mirror, it should be positive (which incidentally gives me the correct answer to a question I'm attempting)
Is Hyperphysics wrong? or have I misinterpreted it?
here's the link:
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/mirray.html#c4