FactChecker's latest activity
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FactChecker replied to the thread PHP My website presents the visitor with the choice of opting out of using cookies.....Cookies are often necessary to keep track of the progress of each user in navigating a website. Any website that can not use any cookies... -
FactChecker reacted to .Scott's post in the thread Undergrad The countability paradox of computable numbers with
Like.
A computable number must be the result of a "terminating algorithm". An algorithm that is required to examine each element in a list of... -
FactChecker replied to the thread Undergrad Question about increasing laser power.You are asking if we do impossible things, can impossible things happen. Yes.
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FactChecker replied to the thread A question about quantum entanglement.I thought that Bell's theorem/test ruled out the existence of local hidden variables.
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FactChecker reacted to Mark44's post in the thread Hi! Can someone explain about Differential Equations? with
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And a day late? :oldbiggrin: -
FactChecker reacted to .Scott's post in the thread Undergrad Question about increasing laser power with
Informative.
If I catch the spirit of you question, you will be gratified to discover that one can design a laser that will continue to operate as it... -
FactChecker reacted to DaveE's post in the thread Undergrad Question about increasing laser power with Informative.
Home built confocal (and similar) resonators aren't THAT finicky. Many people have built low performance, low reliability, and often...
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FactChecker reacted to Roberto Pavani's post in the thread Undergrad Question about increasing laser power with Informative.
What you're describing is essentially a passive Fabry-Pérot cavity. This is actually a well-known setup — the intracavity field can be...
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FactChecker reacted to DaveE's post in the thread Undergrad Question about increasing laser power with Informative.
Virtually all lasers use this, or similar, techniques internally to function optimally. You won't make their design better by adding...
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FactChecker reacted to Roberto Pavani's post in the thread Undergrad Question about increasing laser power with Like.
The answers above are correct. Just adding a safety note: any laser above ~500 mW (Class 4) requires proper eye protection, not just...
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FactChecker reacted to .Scott's post in the thread Undergrad Question about increasing laser power with Informative.
There are two kinds of lasers, continuous wave (CW) and pulse. Since you're thinking of CW, that is what I will address. Most CW...
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FactChecker replied to the thread Undergrad Question about increasing laser power.I believe that is how they work, up to a certain power (20W?). Trying to do that too much starts to melt parts. I am just a casual...
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FactChecker reacted to Demiurge's post in the thread A question about quantum entanglement with Informative.
What you are asking shouldn't possibly exist in a classical-physics universe. But science hasn't settled on a particular interpretation...
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FactChecker replied to the thread Ubuntu slow for compute-intensive applications?.Have you looked at the top command output or other performance monitoring numbers? ( see...
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FactChecker reacted to Dale's post in the thread High School The problem of energy appearing out of nowhere with Like.
You could have a universe that obeyed relativity and did not respect the conservation of energy. Such a universe would also violate the...