Why do we see stars as triangular shapes in the night sky?
回答 (12)
2018-07-29 7:04 am
✔ 最佳答案
Reflection
2018-07-29 7:07 am
I'd go see an eye doctor. That ain't right.
2018-07-29 7:05 am
stars are point sources. If you see them as triangular, that is a problem with your eyes.
2018-07-29 9:59 am
I believe what you are referring to is the spikes in star images caused by diffraction, most often seen in reflecting telescopes or an effect in the eye called Entoptic phenomenon.
https://en.wikipedia.org/wiki/Entoptic_phenomenon
Most small reflecting telescopes have a secondary mirror supported by three vanes. This causes diffraction spikes at right angles to the vanes. In a telescope with 3 vanes, you may see three spikes, like a triangle. There are sometimes 4 in larger telescopes.
Obstructions to the eye, such as long lashes, can also produce diffraction of starlight (Entoptic phenomenon).
Our know-it-all friend Wikipedia has a good explanation of diffraction spikes with illustrations.
https://en.wikipedia.org/wiki/Diffraction_spike
A more detailed explanation: But be forewarned, the illustration is mistaken! The spikes are at right angles to the obstructions, not aligned with them! Error! (Study your waves, folks!) Unfortunately I see this common error all the time. Astronomers should study optics itself in much more detail, both physical optics and natural optics.
http://www.beugungsbild.de/diffraction/diffraction.html
https://en.wikipedia.org/wiki/Entoptic_phenomenon
Most small reflecting telescopes have a secondary mirror supported by three vanes. This causes diffraction spikes at right angles to the vanes. In a telescope with 3 vanes, you may see three spikes, like a triangle. There are sometimes 4 in larger telescopes.
Obstructions to the eye, such as long lashes, can also produce diffraction of starlight (Entoptic phenomenon).
Our know-it-all friend Wikipedia has a good explanation of diffraction spikes with illustrations.
https://en.wikipedia.org/wiki/Diffraction_spike
A more detailed explanation: But be forewarned, the illustration is mistaken! The spikes are at right angles to the obstructions, not aligned with them! Error! (Study your waves, folks!) Unfortunately I see this common error all the time. Astronomers should study optics itself in much more detail, both physical optics and natural optics.
http://www.beugungsbild.de/diffraction/diffraction.html
2018-08-01 2:29 am
All Stars are globular
The patterns that they make between each other in their constellations can be all kinds of shapes
Even representing animals
The patterns that they make between each other in their constellations can be all kinds of shapes
Even representing animals
2018-07-30 4:15 pm
Do you mean single stars? If so you need to see your optomotrist. If you are talking about groups of stars, then you are probably unconsciiously grouping three stars. The constellations are all sorts of shapes, and are meaningless except in the human imagination, like seeing shapes in clouds.
2018-07-29 10:07 am
No idea, most people see stars as star-shaped.
2018-08-01 2:42 am
"We" don't, get your eyes checked.
2018-07-31 12:55 pm
Someone hit you on back of head you see stars any time of day.
2018-07-31 12:17 am
I'm not sure that we do...
2018-07-30 11:36 am
The triangle is one of those shapes that can be in any design and still make sense. Like it can look really weird and uneven, but you could look at three random stars and say, "hey that kind of makes a triangle if you look at it from that direction". Squares and rectangles rely on identical lengths and angles, and so on. So it doesn't make a lot of sense when you see a weirdly shaped rectangle.
2018-07-30 9:01 am
We don't. You have problems with your eyes.
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