Questions tagged [shadow]
The shadow tag has no usage guidance.
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Do superluminal shadows drop the local temperature on distant objects?
There are lots of examples online of the scenario of someone with sufficient machinery casting a shadow of their thumb on the moon. It's argued the shadow travels faster than light, instantaneously ...
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Difference in light falling into a room depending on the positioning of the sun
How does the lighting falling into a room differ in color temperature, shadow productions, directionality and other aspects, in relation to the positioning of the sun and the room?
For example, if the ...
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How does a Circular Light Source create Shadows with Darker Edges Sometimes?
Problem:
There is a room where the light fixture is circular*. Shadows of objects in this room are darkest in the center and brighter toward the edges, except for my phone charger. Its shadow is ...
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Books/resources for the study of non-flat spacetime shadows
I'm preparing a research paper (and possible review) on shadow calculation in asymptotically non-flat spacetime. I have been searching the internet for some references and the only thing I found was ...
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Why does a shadow of a fork 'dissappear' once submerged? [duplicate]
NO SHADOW of the fork!
A distinct black shadow can be observed at the bottom of a glass before and after the fork enters the water, but the shadow disappears at the instant of entry, is this a ...
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Why do colored lights produce colored shadows?
I found in this site that if we use a set of colored lights we'll have colored shadows. But why is that?
As far as I know a shadow is where there is no light. So why isn't the shadow that is produced ...
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Why does heat have a shadow? [duplicate]
I just recalled the previous winter that I had stood in front of our heater to get warm. I then observed that the heat that was going up had a shadow on the wall behind the heater.
I suspect those ...
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How can a virtual image form a shadow?
This is something that completely blew my mind. Last week I was playing randomly with a mirror and my pen and then I noticed that the image of the pen was also having its shadow on a nearby wall.
How ...
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Why are shadows translucent?
Just saw a video about how the shadow on moon is pitch black.
That took me to the question of scattering. I have myself asked a question similar to this already.
When light from a bulb(consisting of ...
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What is the science behind coloured shadows?
Why are colour shadows formed? I have three coloured glasses in my house and If I keep my hand in its light path, I am seeing coloured shadows on the opposite wall.
Why is this happening?
Also ...
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Why does the shadow of my finger appear blue? Is it due to Rayleigh scattering?
The shadow of my finger appears blue on a page of the book which is facing away from the source of light. Is this due to the scattering of light?
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Can emitters of light have shadows? [duplicate]
Today, I was wondering whether an object that is emitting light in all the directions can have a shadow. The idea is that there are two emitters, one of them throws off light in all the directions ...
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Swimming lane line shadow
In an indoor pool, I have noticed a distinctive shadow of the swimming lane lines on the bottom of the pool, whereas people swimming there do not leave shadows.
No shadows of the swimmers can be ...
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How are Black Holes shadow and deviation from circularity measured? [closed]
After the images of M87* and SgrA* black holes from the EHT collaboration, Black Hole Physics have entered in a new "astrophysical" era. I've started to read about these objects recently, ...
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Why shadows behave strangely near corners [duplicate]
i noticed that looking at 2 objects like my finger and a book, when they are very close, it seems like their shadow grows bigger towards eachother (as in this video). why? is related in some way to ...
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