Score
Title
285
AskScience Panel of Scientists XVII
961
AskScience AMA Series: European Southern Observatory announcement concerning groundbreaking observations.
1190
Do hydrogen isotopes affect chemical structure of complex hydrocarbons?
977
How far can a big passenger aircraft (for instance an Airbus A340) glide after catastrophic engin failure?
116
What is happening when a chip goes stale?
82
What is happening when a computer generates a random number? Are all RNG programs created equally? What makes an RNG better or worse?
105
Is there a difference in suicide rates between people who have already had children and those who haven't?
3
How is Mills's constant calculated? How does it relate to the Riemann hypothesis? Why don't we know if it's rational?
20
Why do electrons have a constant mass?
274
Why don’t we use salt water for toilet water? Wouldn’t it save millions of gallons of freshwater?
3
How do we calculate the exhaust speed of ions in a Hall-effect thruster ?
54
If you drop something on a solid, does it ripple like a liquid would except much less noticeably?
2
Are the social behaviors we label under 'group dynamics' universal? In other words, do the subconscious behaviors of a group change between cultures/ethnic lines, or are we all the same in this fundamental respect?
4793
How do audio books, printed books, and videos differ in terms of how our brains retain and process the information?
3
How can we prove that earth is rotating?
11
Why do some trees leaves turn red some yellow and some orange and if a tree is red this year then is it always red or can it be yellow next year?
63
Can there be anything higher than a pH of 14 or lower than a pH of 0?
15
Why are sloths so slow?
4
Why is Ruthenium's electron configuration [Kr] 5s1 4d7?
16
Will sterilisation with gamma rays not make the product radioactive or destroy the product?
6
Human fetal development: When does the uterus start to form?
13
The impact of canals in a city?
1
Why does absence of blood flow cause cell death?
2
Is the low dosage of cosmic background radiation we are constatly exposed to a driver of evolution?
16
How do tree rings form?
11
Can deaf people get tinnitus?
12
Do you burn more calories when cold compared to when you are warm when doing the same activity?
9
Does a flashing LED light use less electricity than a steady light? Would a light on a 1/2 second on/off flash use half the electricity?
1
What factors lead to the Wisconsin glaciation?
7
How do the switching mechanisms in transistors work, and how are they triggered?
9
Concerning the photoelectric effect, if an electron's energy is nearly proportional to the frequency of the incident photons, why don't solar panels work on cloudy days? Doesn't UV light, which is higher energy than visible and infrared, pass through clouds?
0
Why is it that, when traveling in space, the heavier the food is, the more expensive it is to transport? Who pays money to who?
3
Was bacon used as a treatment for dermatobia hominis?
6278
Do you use muscles to open or close your eyes?
8
I know a catalyst works by lowering the activation energy but how does it do that?
2
Risk Factors vs Indicators for Disease - What's the difference?
8
How do we know how much a planet weights/the mass of the planet, without knowing exactly what it is made of?
14
My physics tutor said that we are now able to change the wavelength of an already emitted laser beam. How is this possible?
1
Given low enough temperature and high enough pressure, is everything able to freeze?
3
Why does NaCl always has a Crystal structure when solid ?
3
How does a mirror reflect light?
1
Do light waves affect how sound waves travel or vice versa?
15 teraflop You're asking about the difference between [fluorescence](https://en.wikipedia.org/wiki/Fluorescence) (where a substance absorbs light and *immediately* re-emits it) and [phosphorescence](https://en.wikipedia.org/wiki/Phosphorescence) (where a substance absorbs light, stores the energy, and releases it gradually over time). According to [the abstract of a paper that I found](http://pubs.rsc.org/en/content/articlelanding/2004/cc/b311667k#!divAbstract), quinine is phosphorescent, but only on very short timescales of a few hundred milliseconds. Sorry, it looks like you're out of luck.
1 [deleted] [removed]
2 wfaulk I just tested it with a blacklight and Fever Tree brand tonic water, which definitely has real quinine. There is no apparent residual light. [Here's the video.](https://youtu.be/keDTw0vQnTw)
15 0 teraflop You're asking about the difference between [fluorescence](https://en.wikipedia.org/wiki/Fluorescence) (where a substance absorbs light and *immediately* re-emits it) and [phosphorescence](https://en.wikipedia.org/wiki/Phosphorescence) (where a substance absorbs light, stores the energy, and releases it gradually over time). According to [the abstract of a paper that I found](http://pubs.rsc.org/en/content/articlelanding/2004/cc/b311667k#!divAbstract), quinine is phosphorescent, but only on very short timescales of a few hundred milliseconds. Sorry, it looks like you're out of luck.
1 0 [deleted] [removed]
2 0 wfaulk I just tested it with a blacklight and Fever Tree brand tonic water, which definitely has real quinine. There is no apparent residual light. [Here's the video.](https://youtu.be/keDTw0vQnTw)