Every Sunset Is An Opportunity To Reset.

F/13.0, 1/640, ISO 250.

San Francisco Sunset Brown Pelican

What do the Starship Enterprise and toilet paper have in common?

They both probe Uranus and wipe out Klingons.

Interesting Fact:   As sunrise and sunset are calculated from the leading and trailing edges of the Sun, respectively, and not the center, the duration of a daytime is slightly longer than nighttime (by about 10 minutes, as seen from temperate latitudes). Further, because the light from the Sun is refracted as it passes through the Earth’s atmosphere, the Sun is still visible after it is geometrically below the horizon. Refraction also affects the apparent shape of the Sun when it is very close to the horizon. It makes things appear higher in the sky than they really are. Light from the bottom edge of the Sun’s disk is refracted more than light from the top, since refraction increases as the angle of elevation decreases. This raises the apparent position of the bottom edge more than the top, reducing the apparent height of the solar disk. Its width is unaltered, so the disk appears wider than it is high. (In reality, the Sun is almost exactly spherical.) The Sun also appears larger on the horizon, an optical illusion, similar to the moon illusion.  ( https://en.wikipedia.org/wiki/Sunset#Historically )

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28 Comments

    • Hehehe. First time I heard it I burst in to laughter. Thank you very much for stopping by and sharing your thoughts with us. Happy Blogging! 🙂

    • Thank you very much, San Francisco is awesome. I appreciate you stopping by and checking out my post. Happy Blogging! 🙂

      • My father grew up in Petaluma, went to Berkley, so I was in SF a lot as a kid to visit relatives. Lots of photo ops there! Sorry to hear about all the wildfires near Mendocino – one of my fav places.

    • You are so lucky, I have to travel far to get some photos of them. Thank you very much for stopping by and sharing your thoughts with us. Happy Blogging! 🙂

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