What process occurs for a light bulb to be “burnt out”? | AskScience Blog

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Wednesday, June 5, 2019

What process occurs for a light bulb to be “burnt out”?

What process occurs for a light bulb to be “burnt out”?


What process occurs for a light bulb to be “burnt out”?

Posted: 04 Jun 2019 07:44 PM PDT

What is the diameter of the average bolt of lightning?

Posted: 04 Jun 2019 03:37 PM PDT

Does the size of the lighting have anything to do with its visibility? Or is it the intensity/energy in the bolt that makes it look bigger than it actually is?

submitted by /u/lilafrika
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Will the continents eventually connect to recreate Pangea?

Posted: 04 Jun 2019 04:22 PM PDT

What happens to breast implants after you die? So they decompose with the body or will they last with your skeleton for thousands of years?

Posted: 04 Jun 2019 01:59 PM PDT

Why are DVD-RAM disc sectors laid out the way they are?

Posted: 05 Jun 2019 04:20 AM PDT

I saw a DVD-RAM disc for the first time the other day and noticed an interesting pattern etched into the disc. The DVD-RAM Wikipedia page indicates they mark sector boundaries but not why they have that layout. It looks similar to how a rolling shutter affects rotating objects which makes me think it has something to do with how the read/write head moves over the disc. I feel it could also be caused by the increased number of sectors you can fit in each track as you move out from the center of the disc. I know very little about science and technology so I apologize if the answer is obvious.

submitted by /u/BrawkSyamson
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Are galaxies continually getting flatter?

Posted: 04 Jun 2019 05:47 PM PDT

Just like accretion disks, are galaxies destined to get flatter and flatter over time? Ignoring any kind of galactic mergers etc.

submitted by /u/Symbolmini
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How do we know that exoplanets aren't sunspots (starspots)?

Posted: 04 Jun 2019 11:35 AM PDT

It is my understanding that we have observed sunspots to be on an approximately 11 year cycle. For exoplanets that have have been discovered using transit photometry how is it determined that it is a planet causing the drop in brightness and not large sunspots?

submitted by /u/MithandirsGhost
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Does the toxicity of PM2.5 pollution depend on the composition of the particles?

Posted: 04 Jun 2019 03:21 PM PDT

For example, are soot particles more toxic than ammonium salt particles formed from ammonia reacting with atmospheric acids? Or is it simply the size that determines the toxicity?

I couldn't find much information about this.

submitted by /u/-Metacelsus-
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Why does a capacitor eventually have the voltage of the connected battery?

Posted: 04 Jun 2019 08:03 PM PDT

When a capacitor collects negative charge on one plate, it repels further incoming current, and also repels the negative charges on the other side of the plate so that the second plate is positively charged.

So additional electrons will be repeled by the negative plate but shouldn't they also be attracted to the positive plate? How do we know current stops when the capacitor voltage is equal to the battery voltage?

submitted by /u/yosimba2000
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Do photons decay or does just its evidence decay?

Posted: 04 Jun 2019 03:11 PM PDT

How is the age of a photon affected by large gravitational body?

Does the age of a photon directly relate to its rate of decay?

Has it been established that photons decay away? Or are the photons we speak of simply redshifting?

submitted by /u/Rogue_Evelynn
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Would the geographic center of a tectonic plate be the least earthquake-prone spot on that plate?

Posted: 04 Jun 2019 06:29 PM PDT

Or is it more the makeup of the underlying rock that makes an area less likely to experience quakes, regardless of how close it is to a fault line? Or perhaps a combination of both?

submitted by /u/Pawprintjj
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Does the macroscopic cosmic web and the microscopic quantum foam resemble one another in any manner?

Posted: 04 Jun 2019 02:42 PM PDT

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