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AskScience Panel of Scientists XV (self.askscience)

submitted by AskScienceModeratorMod Bot[M] - announcement

1
3704
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PhysicsWhy do sponges get hard when dry but only after use with water? (self.askscience)

submitted by triangle60

2
426
427

PsychologyHow does intelligence change with age? (self.askscience)

submitted by Dzianger

3
12
13

ChemistryWhat makes plastic so cheap and easy to produce as opposed to any other material? (self.askscience)

submitted by KingChronos

4
342
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MedicineIn terms of anatomy, why are some voices husky and some smooth? (self.askscience)

submitted by miraclem

5
2353
2354

PhysicsWhen light is redshifted, is it losing energy? When it's blueshifted, is it gaining energy? (self.askscience)

submitted by escherichia

6
8
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MedicineWill the methods behind future cures/treatments of HIV be applicable to other long term viruses? (self.askscience)

submitted by h00rayforstuff

7
8
9

ChemistryDo electrons have parallel spin in the anti bonding orbital? (self.askscience)

submitted by fenixfunkXMD5a

8
405
406

AstronomyAre there any bodies in space with temperature below temperature of cosmic microwave background of ~2.7 K? (self.askscience)

submitted by Rotifyld

9
8
9

MathematicsIf a decimal number is constructed as {0 . D1 D2 D3 ...} where Di = Random(0..9), for i = 1 to ∞, does such a number "exist" in the Real Numbers? Or in other words, do completely random numbers exist in the Reals? (self.askscience)

submitted by LongtimeLearner99

10
5
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MathematicsIs it possible to find an effective infinity for all intents and purposes? (self.askscience)

submitted by Slim_Pickens_

11
69
70

ChemistryDoes gallium dissolve gold? (self.askscience)

submitted by thecureforstupid

12
1193
1194

ChemistryIs there an element/compound that is denser as a gas than it is as a solid? (self.askscience)

submitted by rupturedprostate

13
6
7

PhysicsWhat is the use of a Van de Graaf Generator ? (self.askscience)

submitted by Great_Scott21

14
934
935

Planetary Sci.If plant life existed on mars in the past, would there still be coal/oil under the surface today? (self.askscience)

submitted by Ausprocess

15
4
5

ChemistryCould mercury be used as a hydraulic fluid? (self.askscience)

submitted by jake831

16
19
20

BiologyAre the genes for eye color linked to the genes for eyesight? In other words, if my child inherits my eye color will he inherit my good eyesight? (self.askscience)

submitted by nedotykomka

17
1
2

PhysicsHow does polarization work in terms of electric and magnetic fields? (self.askscience)

submitted by shadowz749

18
11
12

ChemistryHow are "scans" Of renaissance art made since flash photography can damage paintings? (self.askscience)

submitted by Airshitmasterace

19
11
12

ArchaeologyIf I was walking from West coast to East coast on North America right as the Cretaceous period was at its prime, how would the diversity of ecosystems and species compare to that same walk today? (self.askscience)

submitted by jomdo

20
3663
3664

AstronomyHow many times do most galaxies rotate in their lifetimes? (self.askscience)

submitted by AlexTheGreat1221

21
8
9

ChemistryWhat pressure is necessary for helium to be dissolved into a liquid? (such as beer) (self.askscience)

submitted by thepaulsack

22
5
6

PhysicsIs time dialation observed in particle accelerators? (self.askscience)

submitted by pcx99

23
10
11

ComputingWhat makes one bus protocol faster than another? (e.g. UART vs USB) (self.askscience)

submitted by SnowdensOfYesteryear

24
3
4

Earth SciencesWhat geologic factors determine whether decayed carbon will end up as natural gas, oil or coal? (self.askscience)

submitted by Tannedlines

25
3
4

NeuroscienceAt what Age do children recognize themselves as a person? When and how do they become selfaware? (self.askscience)

submitted by GoodGuyChrisiii

26
33
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MathematicsAre there numbers outside of C? If so, is there an ensemble including every other number ensemble we know? (self.askscience)

submitted by MrEvilNES

27
2
3

AstronomyCould the distribution of cosmic background radiation be uniform if we assume the larger universe is oddly shaped? (self.askscience)

submitted by waal70

28
4
5

BiologyCertain organisms, like tadpole shrimps, not only are hermaphrodite but can also auto-impregnate. Is the offspring of this kind of reproduction a clone of its parent? What are its advantages/disadvantages? (self.askscience)

submitted by javierbg

29
52
53

Human BodySince the QT interval represents the depolarization AND repolarization of the ventricles, is it linearly correlated with heart rate? (self.askscience)

submitted by Jolly_Misanthrope

30
1
2

PhysicsTheoretically speaking, would it be possible to create a circuit where at least one of the wires consists of plasma? (self.askscience)

submitted by Proasek

31
2
3

ChemistryIs there any rhyme or reason to the charges of polyatomic ions, or is it completely random? (self.askscience)

submitted by TheDesertSnowman

32
0
0

BiologyI've heard mitochondria produce water... so could we survive on nothing but dehydrated food? (self.askscience)

submitted by thejoesighuh

33
0
1

PhysicsIs there a possibility of creating a solid block with very dense matter, such as Ununoctium? (self.askscience)

submitted by Awesomedispantsable

34
0
1

PhysicsDo liquid-based foams have the same fluid dynamics (viscosity etc) as their parent liquids? (self.askscience)

submitted by Syzygy99

35
0
1

ChemistryWhy is Calcium more reactive than Sodium (to water) when it has a higher first ionization potential? (self.askscience)

submitted by alexbatman

36
31
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Planetary Sci.Could roadways contribute to rising global temperature, to a significant degree? (self.askscience)

submitted by MuphynManOG

37
11
12

PhysicsIf I were placed into a hollow sphere with super-massive walls, would I experience time dilation but not gravity? (self.askscience)

submitted by SirNanigans

38
7
8

PhysicsIf movement is relative, and F=ma, does that mean that force is also relative? (self.askscience)

submitted by iacceptmyrboverlords

39
3
4

PhysicsWhat makes a nuclear reaction a direct reaction or a compound reaction (non-resonant vs resonant)? (self.askscience)

submitted by onlyhtml

40
23
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Planetary Sci.If dirt on Earth is called "earth", what is dirt on Mars called? (self.askscience)

submitted by battletactics

41
7
8

AstronomyAre we able to see black holes? If so, can we see the Milky Way's black hole (from earth/telescope)? (self.askscience)

submitted by k0toriminami

42
7
8

ChemistryCan you tell if two chemicals will react just by their names? (self.askscience)

submitted by chem689

43
59
60

ComputingHow do quantum computers get programmed? (self.askscience)

submitted by Simyala

44
7
8

ChemistryWhat's happening on a molecular level that makes pasta so sticky? (self.askscience)

submitted by ehsahr

45
3941
3942

PhysicsSince gravitational waves are real, does that mean all gravitational orbits are decaying? (self.askscience)

submitted by TriangleGodsDenyYou

46
2
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AstronomyWhy does matter accreting onto a white dwarf cause it to go nova, and not just "reignite" into a regular star again? (self.askscience)

submitted by Goodbye_Galaxy

47
17
18

AstronomyWhy do Galaxies look like spirals? (self.askscience)

submitted by PM_me_your_spacegoat

48
4
5

PhysicsDo metals/alloys resonate electrically like quartz and other crystals do? (self.askscience)

submitted by averazul

49
5
6

BiologyAre there any ecosystems relatively immune to global warming? (self.askscience)

submitted by DtownMaverick

50
3
4

Planetary Sci.How do we know that young earth was hot and molten? (self.askscience)

submitted by stickylava

51
9
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LinguisticsFor those that can lipread, is it possible to distinguish regional or international accents by using solely lipreading? (self.askscience)

submitted by Crd77

52
149
150

PhysicsWhen an object is travelling at speed, at what point does it go from being cooled (by air resistance) to heating up and eventually burning up? (self.askscience)

submitted by Theplayground_nz

53
13
14

ChemistryHow are aqueous solutions of metal ions prepared? (self.askscience)

submitted by Ytonic

54
11
12

PhysicsFor a series circuit with a voltage source and three resistors, after current flows through all resistors, why does the voltage drop to zero? (self.askscience)

submitted by xHamsaplou

55
8
9

BiologyDo the lack of BSL-3 facilities worldwide increase the risk of a worldwide epidemic? Why exactly do we not have more of these facilities? (self.askscience)

submitted by perkam

56
117
118

PhysicsAre any of Einstein's predictions yet unproven, and if so, which would be the most groundbreaking if proven correct? (self.askscience)

submitted by sonofdarth

57
3
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PhysicsMatter is 99.9999999999999% empty space in the particle level. Is it the same on a solar sxstem/galaxy/etc scale too? (self.askscience)

submitted by Short_Term_Account

58
33
34

AstronomyWould our sun (Sol) be visible from Alpha Centauri? (self.askscience)

submitted by Starzajo

59
1
2

NeuroscienceWhy does some neurogical diseases like Machado-Joseph disease, only show symptoms after a certain age? (self.askscience)

submitted by BernardoRodrigues

60
50
51

PhysicsWhen a supernova explode and collapse to a black hole, how much time does it takes from explosion to being a singularity ? (self.askscience)

submitted by vilette

61
151
152

PhysicsWhat is generally used to cool down superconductive elements? (self.askscience)

submitted by slimreaperokc

62
3
4

PhysicsDoes measuring the quantum spin of an electron change the spin? So that bij measuring a left spin we can say it changed to right or up to down? (self.askscience)

submitted by Stressmove

63
14
15

AstronomyWhat would happen with two telescopes? (self.askscience)

submitted by gmikoner

64
11
12

BiologyAre there any promising New ways to fight antibiotic resistance in bacteria? (self.askscience)

submitted by flaptamer

65
14
15

Planetary Sci.Now that the Earth and Moon have been tidally locked for a decent while, what interesting differences can we find between the Regolith (or deeper layers) on either "side" of the moon? (self.askscience)

submitted by oreng

66
11
12

AstronomyWhen searching for exoplanets, do astronomers have to account for the planets size? (self.askscience)

submitted by Mythicdream

67
10
11

NeuroscienceWhаt сausеs осulаr dоmіnаnсе? (self.askscience)

submitted by redditsci

68
8
9

NeuroscienceHow does olfactory fatigue work? (self.askscience)

submitted by RaidenXT

69
4146
4147

PhysicsWhy do we keep trying to find new heavy elements if they only snap into existence for milliseconds? (self.askscience)

submitted by XxCjkavyxX

70
12
13

AstronomyHow stable are the Lagrange points? (self.askscience)

submitted by justbourv

71
9
10

PhysicsIf an object is in orbit, meaning it is in free-fall, what stops it from accelerating indefinitely? (self.askscience)

submitted by Dee-Train

72
13
14

AstronomyWhen does a star 'ignite' and is it instantaneous? (self.askscience)

submitted by Trippy_Ferret

73
14
15

PhysicsIn DC power transmission down a wire, what is really transmitting the power, the electrons slowly bumping along, or the photons propagating the EM field? (self.askscience)

submitted by spectralwarp

74
16
17

Human BodyIs it possible to pick 6 colors with the most amount of contrast between them? (self.askscience)

submitted by AldersRazor

75
7
8

PhysicsWith new experiments showing the speed of light isn't constant, what does this mean for relativity? (self.askscience)

submitted by Xacto01

76
11
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PhysicsWhat are the greatest pros and cons of MOND, Teves, and Conformal Gravity? (self.askscience)

submitted by omniacgames

77
13
14

PhysicsHow does the decibel system in water compare to in air? Do humans perceive things to be louder underwater? (self.askscience)

submitted by spdalton

78
7
8

BiologyHow do we know the geographical origin of certain plant and animal species ? (self.askscience)

submitted by VultureV1

79
4
5

ChemistryHow is the caloric content of a liquid determined? (self.askscience)

submitted by duffcalifornia

80
6
7

PhysicsWhy did Lenard choose aluminum for his window in his cathode experiment rather than other more typical material? (self.askscience)

submitted by andnandxor

81
21
22

ChemistryIs there any substance that burns more easily at lower tempratures than at higher ones? (self.askscience)

submitted by scruffy_water_mammal

82
15
16

PhysicsHow do clay pots decrease the temperature of water to values lower than the temperature of surrounding air? (self.askscience)

submitted by Forenkazan

83
1
2

PhysicsIs energy not conserved in our universe? (self.askscience)

submitted by weezylane

84
7
8

PhysicsHow do certain objects in our universe (such as the boomerang nebula) naturally reach temperatures close to absolute zero? (self.askscience)

submitted by nightwind1

85
5
6

Human BodyHow do we know that cellular respiration produces 30-32 ATP? (self.askscience)

submitted by sashaminkh

86
8
9

PhysicsWhy did the Saturn V rocket only go to the moon, but Space X's smaller thrust rocket will go to Mars? (self.askscience)

submitted by GreenAce92

87
37
38

PhysicsHow did people measure light intensity before electronics existed? (self.askscience)

submitted by isnar000

88
2
3

Biology[Biology] Why is there a thermodynamic for K+ to be recycled out of cells when NaCl is being secreted from gills? (self.askscience)

submitted by sedateeddie420

89
3
4

PhysicsDoes antimatter have an equal form of electricity, or would it operate differently? (self.askscience)

submitted by aschesklave

90
6
7

Astronomyis there a critical mass at which an object in space can no longer be non-spherical and collapses under its own gravity? (self.askscience)

submitted by Once-a-lurker

91
0
1

MathematicsWhat are even knots? (self.askscience)

submitted by DoubleBO

92
2
3

AstronomyWith a hotter star, would two planets receiving Earth and Mars levels of radition be as distant from each other as Earth/Mars or further/closer? (self.askscience)

submitted by gsdev

93
6
7

Human BodyUpon loss of oxygen, what parts of the body stop using it first? (self.askscience)

submitted by Slothyn

94
1
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Earth SciencesIf we are walking around with the weight of all the air above us on our heads and shoulders, then why don't we feel lighter when we walk under an enclosed structure? (self.askscience)

submitted by ChicagoFaucet

95
2
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Physics{Physics} Does sound only have 1 absolute speed, or does it have a max speed that is used for reference? (self.askscience)

submitted by Relaxel

96
1
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PhysicsWhy does an object have constant velocity with centripetal force? (self.askscience)

submitted by imRobert7

97
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2788

Physics[Physics] Are there rainbows on other planets? If yes, are their colors the same? (self.askscience)

submitted by bitblogbr

98
6
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AstronomyTo what extent can we accept that galaxies are accelerating away from each other since the existence of universe, considering that we have observed only a fraction of time of the universe's lifetime (or behaviour of galaxies) so far? (self.askscience)

submitted by mohe3795

99
0
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PhysicsDoes light bend around obstacles ? (self.askscience)

submitted by abdus325

100
0
0

BiologyWhy do cats eyes glow in the dark but a mirror doesn't? (self.askscience)

submitted by SpermMan

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