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Joined 6 months ago
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Cake day: December 20th, 2023

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  • Zarcher@lemmy.worldtobirding@lemmy.worldBaby Goldfinch made it to my feeder
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    2 months ago

    That crest is very characteristic of a goldcrest. I know of two sub species of gold crests, one has the yellow stripe the other a slightly orange stripe and body

    This seems to me like the goldfinch, regulus regulus. Not the common firecrest , regulus ignicapilla.

    My information sources is the Merlin Bird spotting app.

    EDIT: the correct name is not goldfinch but goldcrest. As it is not in the finch family at all.











  • My understanding is that in a true vacuum light will not be reflected or bent by particles. However, due to gravity bending space time itself, light will follow the curvature of space. It would depend on the observer if the path if light is straight. If you look at the light passing by, it would not be straight under influence of gravity. If light itself is the observer, it will travel in a straight line :)

    In the case of gravitational lensing the observer is looking at light coming in. An outside perspective.