Score
Title
270
AskScience Panel of Scientists XVIII
634
AskScience AMA Series: IAmA restoration ecologist focused on restoring oysters to the NY Harbor in New York City. AMA!
5914
How is it so that several (all?) mammals grow and lose a set of "baby teeth" before growing their final dentition? Why stop at two sets when other vertebrates such as sharks regenerate their teeth constantly?
9716
How does a master key work?
10
How does hydrogen embrittlement work?
3
Why does looking at bright things hurt our eyes?
55
If placed in a controlled environment, do trees that normally undergo seasonal leaf Abcission stop losing their leaves?
42
How do our eyes avoid being commonly infected through things like rubbing our eyes or the pollutants in the air?
8
Whats the difference between an explosive, a propellant and an accelerant?
8
Would it be possible to have a ball of electrons?
6
Statistical Regression: Why don't we care about the t-stat / p-value for the intercept term ?
7
How for down into the mantle do we have to go before the temperature is hotter than the surface?
3
Does Ocean Salinity Drop During/After a Rainstorm?
8
Are women born with all their eggs?
27
Do nocturnal animals prefer sleeping conditions that are dimly lit or bright in contrast to humans which prefer dark conditions?
5534
How does sunscreen stop you from getting burnt?
12
Would objects orbiting Earth, such as space debris, satellites, the ISS, be hot or cold to the touch?
12
How can we tell if someone we can’t see is shouting from far away or whispering close to us?
14
[Medicine] What leads a body to reject or accept donated organs?
22
How does a train engine, pulling miles of cars and many tons of load, get enough traction to actually move everything?
12
Why are shadows casted from objects more crisp depending on how far the object is from the ground?
17
How do phones keep cool with small heatsinks and no fans?
47
If the human body has evolved over millions of years to swell up in response to an injury, why are we instructed to apply ice to prevent our evolutionary swelling response?
3
What are public and private keys and what do they do for a server when transferring information?
9
Why don’t we sneeze in our sleep?
1
What is the shape of a transmissions wave? Can this shape be changed? Can motion significantly affect the shape?
24
Studies have shown that small movements in the throat occur during an internal dialogue--does that happen when music plays in your head, too?
1
Are there earthquakes in other planets?
4
How are enzymes like DNA ligase or DNA polymerase created in lab and sold in industrial scales?
5
How is hybrid fruit produced?
7
What is causing this orbiting water droplet in my tea kettle?
7
Are there more cases of depression in modern times than in history?
7
Why is cold weather usually synonymous with pneumonia infections?
4
Are there any videos from NASA or other space agency where they do tests in the vacuum of space? Such as a plant or mice or anything is taken outside of the space shuttle/station
4
Is there an explanation for why we have instances of an irregular body hair?
5
Can rare astronomical phenomena such as solar eclipses or supernovas disrupt biological cycles of living organisms?
3
Is there an upper limit to how fast a fluid can saturate paper through capillary action?
69
Why does sunburnt skin feel hot to the touch?
12
Air molecules travel at 1000 mph. Can we harness that kinetic energy?
8
Why is space and space travel illustrated, for the most part, on a horizontal line? Can't we space travel "upwards" or "downwards" and where would that eventually lead?
2
Why are Neanderthals depicted with dark skin? If they lived in Europe for longer than modern humans, why didn't they also evolve fair skin tone?
2
Could a container or cruise ship cause an orographic/rain shadow effect?
16 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)