Esempi
At mid-totality, the Moon's southern limb is a mere 0.7 arc-minutes from the umbra 's centre.
The strongest solar magnetic fields, up to 4000 gauss, are found within the umbra .
How about cleverly distracting from under-eye umbra with some beauty department illusions?
Soft shadows will create more realistic lighting effects, since this type of shadow more closely resembles shadows in the real world, and cast both an umbra an a penumbra.
First, the Earth stopped turning relative to the sun, and the moon parked itself on the dark side, a little outside the umbra .
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