/u/datguy030's posts in /r/askscience

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When you put an object in front of a light source, why isn't the shadow always pitch black? What causes it to change darkness with respect to the distance of the object to the ground?

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What exactly does an electric field, and the value you get for an electric field, represent?

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If you stand on two scales, why would the resulting weights shown on each one not be equal to your actual weight?

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Why do Olympic Sprint Bikes (the ones used in the velodrome) have covered back wheels?

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In terms of evolution, what was the benefit of pain-recognition, or even broader, the sense of touch? Why did those with this sense eventually "take over" the other ones without?

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How much space does all the space on the internet take up?

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Today, while watching a movie on a new TV, the movie looked like a home video, too real, if you know what I mean. Why did this happen? I'm not sure exactly what about it caused it, but yeah.

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Can magnetic fields/gravitational fields be used to harvest usable energy somehow (disregarding practicality)?

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Why is it best to leave a battery charged until it is full, and then deplete it until it is empty?

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In a circuit, what does potential difference do? Does it give more power to the appliance, or is that what current does?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When you put an object in front of a light source, why isn't the shadow always pitch black? What causes it to change darkness with respect to the distance of the object to the ground?	2
What exactly does an electric field, and the value you get for an electric field, represent?	2
If you stand on two scales, why would the resulting weights shown on each one not be equal to your actual weight?	2
Why do Olympic Sprint Bikes (the ones used in the velodrome) have covered back wheels?	1
In terms of evolution, what was the benefit of pain-recognition, or even broader, the sense of touch? Why did those with this sense eventually "take over" the other ones without?	1
How much space does all the space on the internet take up?	1
Today, while watching a movie on a new TV, the movie looked like a home video, too real, if you know what I mean. Why did this happen? I'm not sure exactly what about it caused it, but yeah.	1
Can magnetic fields/gravitational fields be used to harvest usable energy somehow (disregarding practicality)?	1
Why is it best to leave a battery charged until it is full, and then deplete it until it is empty?	1
In a circuit, what does potential difference do? Does it give more power to the appliance, or is that what current does?	1