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The scalp hairs shown here are actually black but the inherently translucent nature of hairs causes them to appear to be brown. Note that at such high mangifications the depth of field in a light microscope is not enough to bring the entire hair into sharp focus at once. |
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Usually you would try to avoid bubbles in a "wet" preperation. In this case, however,
it adds an interesting effect! The scaly nature of the outer layer of the hair
is seen much more clearly
underneath the bubble which acts as a lens. Such "happy accidents" are not unheard of among experienced
microscopists, but bubbles more often turn up in the worst possible places! |
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