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

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Only show posts with narrations

Please indulge me in asking a fantasy-based question about technology and time travel...

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When a photon hits an object and is absorbed and re-emitted, it is considered to be a new photon. But is it really?

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If the sperm and ovum contain exactly the same DNA material all the time, why don't children from the same parents always look exactly identical?

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If you could build a brick from a single element (say, calcium) atom-by-atom, and each atom was given spin in the same direction, would it be magnetic?

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Railguns for Interplanetary and Interstellar colonization.

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An interplanetary scout ship entered earth orbit this morning and announced intentions to open dialog for earths entry into galactic civilization. However, there's a catch...

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Kepler is doing an amazing job of discovering new planets, however - many of them are "super earth" sized. I have questions.

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What is the smallest usable sized Stanford torus?

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Are there alloys in existence that require more energy to bend/break/melt than is required to create?

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Mars in geologically tea, and has no magnetic field. If the Earth didn't have such a large moon, would we have suffered the same fate?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Please indulge me in asking a fantasy-based question about technology and time travel...	2
When a photon hits an object and is absorbed and re-emitted, it is considered to be a new photon. But is it really?	2
If the sperm and ovum contain exactly the same DNA material all the time, why don't children from the same parents always look exactly identical?	1
If you could build a brick from a single element (say, calcium) atom-by-atom, and each atom was given spin in the same direction, would it be magnetic?	1
Railguns for Interplanetary and Interstellar colonization.	1
An interplanetary scout ship entered earth orbit this morning and announced intentions to open dialog for earths entry into galactic civilization. However, there's a catch...	1
Kepler is doing an amazing job of discovering new planets, however - many of them are "super earth" sized. I have questions.	1
What is the smallest usable sized Stanford torus?	1
Are there alloys in existence that require more energy to bend/break/melt than is required to create?	1
Mars in geologically tea, and has no magnetic field. If the Earth didn't have such a large moon, would we have suffered the same fate?	1