Recent comments in /f/askscience
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Reply to comment by PepszczyKohler in Do tonal language speakers understand each other while whispering? by Paulix_05
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[deleted] t1_j7f60i6 wrote
Reply to comment by PepszczyKohler in Do tonal language speakers understand each other while whispering? by Paulix_05
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[deleted] t1_j7f5uoa wrote
Reply to comment by PepszczyKohler in Do tonal language speakers understand each other while whispering? by Paulix_05
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[deleted] t1_j7f5pdc wrote
Reply to comment by PepszczyKohler in Do tonal language speakers understand each other while whispering? by Paulix_05
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SpeedyHAM79 t1_j7f4sm0 wrote
Reply to comment by mfb- in Would silver drown in mercury or float on it? by slimebor
Still looks like it would float for a very long time, especially without all the agitation shown in the video.
ellipsis31 t1_j7f4giw wrote
Reply to Why are green and red laser pointers so cheap and available, but yellow ones not so much? by SurprisedPotato
Infrared and red laser pointers are direct laser diodes (put current in and light squirts out). Green and blue laser pointers are made by using an infrared laser diode to pump a nonlinear optical crystal which doubles the frequency (halves the wavelength... however you want to say it) to put out photons with a new color. That doubling leaves a gap of wavelengths that are more difficult to access.
meellowstar OP t1_j7f43ax wrote
Reply to Is the yearly cycle of varying daylight durations from day to day throughout time consistent? Is the cycle we have today the same as in the 17th century? by meellowstar
Thank you very much everyone for answering in such detail and with so many different approaches! You guys are awesome! Different time zones for each city thats crazy to imagine. How different the people lived and thought about things in the past compared to us nowaday, even different perceptions of time. I'm going to finish my thesis now. But it was a blast reading all of your answers and theories.
SpeedyHAM79 t1_j7f3vv8 wrote
Reply to comment by ECatPlay in Understanding that deuterium and tritium are simply isotopes of hydrogen, is there an equivalent periodic table that shows all known elements and their isotopes? by [deleted]
Excellent answer.
[deleted] t1_j7f37h9 wrote
mfb- t1_j7eznx5 wrote
Silver has a density of 10.5 g/cm^(3), mercury has a density of 13.5 g/cm^(3) (both at room temperature). Silver floats initially, but you'll get silver in the mercury and mercury in the silver quickly (here is a video).
[deleted] t1_j7ez6ta wrote
Reply to Why oil fries, while water boils? by SaboKunn
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[deleted] t1_j7eyaib wrote
Reply to comment by PepszczyKohler in Do tonal language speakers understand each other while whispering? by Paulix_05
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[deleted] t1_j7expwy wrote
Reply to comment by PepszczyKohler in Do tonal language speakers understand each other while whispering? by Paulix_05
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Ghitit t1_j7exhvd wrote
Reply to comment by Prestigious_Carpet29 in Does the central part of my vision see in a different frame rate than the outer part? by Calvinkelly
Any star I look at, bright or dim, disappears when I look at it because I have macular degeneration.
PepszczyKohler t1_j7ex8cp wrote
Reply to comment by Cyber_Fetus in Do tonal language speakers understand each other while whispering? by Paulix_05
Where are "bought" and "bot" pronounced the same?
THEpottedplant t1_j7ew6yd wrote
Reply to comment by CrustalTrudger in Is there a term for lake bottoms that "hour glass" (temporarily becomes wider following a "shelf" as the depth increases ) , how do bathymetric maps depict this, and does this have a common affect on turbidity, thermoclines, or other characters? by Irisgrower2
Like this (the top is the surface):
\ /
\ /
\ /
/ \
/_______\
Cyber_Fetus t1_j7euwdi wrote
I’m speaking for Mandarin here as I know it and assuming it applies to at least most other tonal languages.
To avoid complication of different levels of whispering and whether the lack of vocal chord vibration can be compensated for through other means, even with a complete lack of tones the listener could still easily use context clues to understand provided they’re fluent enough in the language. For this reason non-native speakers of tonal languages can often get by using incorrect tones or no tones at all.
If you remove tones, any given word still only has a limited number of other words that would overlap. For an English example, though “bought” and “bot” are pronounced the same [Edit: in at least one major US accent], you distinguish a speaker’s use of one versus the other through context.
There is however likely a higher chance of misinterpretation or confusion, say if I pointed to a tree and said “songshu” contextually both “squirrel” and “pine tree” could fit, but these instances wouldn’t be super common and you could likely just ask for clarification.
RexRauron t1_j7esprm wrote
Reply to When does the body store fat? by fappie6
Fat is stored and metabolized all the time. Hormones like insulin determine at which rate these processes occur. When more fat is available then the body needs, more fat is stored then released.
Btw most of the fat we store is from our diet. Converting carbohydrates to fat is ineffective and only contributes a very small amount under normal conditions.
Bbrhuft t1_j7ertwd wrote
Reply to comment by ECatPlay in Understanding that deuterium and tritium are simply isotopes of hydrogen, is there an equivalent periodic table that shows all known elements and their isotopes? by [deleted]
IAEA Isotope Browser for Android includes a navigable Isotope chart.
RadioactiveHop t1_j7erqhi wrote
Reply to comment by ECatPlay in Understanding that deuterium and tritium are simply isotopes of hydrogen, is there an equivalent periodic table that shows all known elements and their isotopes? by [deleted]
There is also the IAEA Isotope Browser app you can install on your smartphone (Android at least)
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[deleted] t1_j7eqgxc wrote
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agate_ t1_j7f6jdb wrote
Reply to Does gas under high pressure conduct heat better than gas under atmospheric pressure? by TetheredArrow0712
Not by much. Thermal conductivity in gases happens by molecules gaining thermal energy and moving to a colder place. Adding more molecules gives you more energy carriers, but they can’t move as far before bumping in to each other. So the thermal conductivity of most gases increases only slightly with pressure.
If you get near the boiling point, or the pressure is so low the molecules fly the length of your chamber without bumping into anything, the situation is different.
https://www.electronics-cooling.com/1998/09/the-thermal-conductivity-of-gases/
https://www.engineeringtoolbox.com/amp/air-properties-viscosity-conductivity-heat-capacity-d_1509.html
https://www.engineeringtoolbox.com/amp/methane-thermal-conductivity-temperature-pressure-d_2021.html