Wikipedia:Reference desk/Archives/Science/February 2021

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February 1

Wikipedia:Reference_desk/Archives/Science/2021 February 1

1. Stabbing someone in the midst of a heart attack
2. Unlimited bandwith for over-the-air broadcasting
3. Who predicted an Analemma (position of the sun in the sky) before it got photograph in 1990s?

February 3

Wikipedia:Reference_desk/Archives/Science/2021 February 3

1. Single use plastic

February 4

Wikipedia:Reference_desk/Archives/Science/2021 February 4

1. drawing planets orbits around earth
2. Vertical bar in chemical formula
3. Cloning using CRISPR/gene editing question
4. Calculating the distance range of commercial over-the-air FM radio stations

February 5

Wikipedia:Reference_desk/Archives/Science/2021 February 5

1. Substance in cardoon stalk
2. Carbon emission of rail vs air

February 6

Wikipedia:Reference_desk/Archives/Science/2021 February 6

1. Why would black holes emit Hawking radiation?
2. Melatonin research journal
3. Kiwifruit with hollow or missing core

February 7

Wikipedia:Reference_desk/Archives/Science/2021 February 7

1. Do Earth observatories better than space telescopes?
2. What is the diagonal line in this satellite image?
3. Americium in smoke detectors

February 8

Wikipedia:Reference_desk/Archives/Science/2021 February 8

1. A disease once called "alhimenia"

February 9

Wikipedia:Reference_desk/Archives/Science/2021 February 9

1. How can a ball of glass bounce higher than rubber ball?
2. M's butterfly collection

February 10

Wikipedia:Reference_desk/Archives/Science/2021 February 10

1. COVID origin

February 11

Wikipedia:Reference_desk/Archives/Science/2021 February 11

1. photons between quarks in protons, neutrons, and mesons- what energies?
2. Journal of Geoscience Education article

February 12

Wikipedia:Reference_desk/Archives/Science/2021 February 12

1. Is there a difference in out-of-body experiences based on how they are induced?
2. What rocket did they use for STS-107?
3. What is the difference between Space Shuttle and Space shuttle orbiter?

February 13

Wikipedia:Reference_desk/Archives/Science/2021 February 13

1. What does "Transferred to Expedition 14" mean in List of International Space Station expeditions?
2. COVID origin; extra Q
3. COVID-19 vaccines safety

February 15

Wikipedia:Reference_desk/Archives/Science/2021 February 15

1. Simple glacier models
2. Meteors approaching head-on
3. Why is electrolysis more effective at permanent hair removal than laser hair removal is?

February 16

Wikipedia:Reference_desk/Archives/Science/2021 February 16

1. Milk questions
2. Transgender hormone therapy stats

February 17

Wikipedia:Reference_desk/Archives/Science/2021 February 17

1. IQ and narrow-sense heritability question
2. Why don't we develop two visions if we have two eyes?

February 18

Wikipedia:Reference_desk/Archives/Science/2021 February 18

1. Satanic landing gear???
2. Medical topic: Technical name for this exercise.

February 19

Wikipedia:Reference_desk/Archives/Science/2021 February 19

1. Chinese first satellite (Dong Fang Hong I)

February 21

Wikipedia:Reference_desk/Archives/Science/2021 February 21

1. Where exactly parachute will land during Mars 2020?

February 22

Wikipedia:Reference_desk/Archives/Science/2021 February 22

1. 50 cal gun and air
2. Blood vessels regenerating
3. RBMK reactor
4. Plant identification requested
5. Shower physics
6. The fraternal birth order effect for male homosexuality: Why didn't evolution select against and weed out this effect?

February 23

Wikipedia:Reference_desk/Archives/Science/2021 February 23

1. Can you store any arbitrarily large amount of information in a finite space?
2. Perseverance's signal delay
3. What's the difference between an extremely early embryo and a skin cell in terms of genetics, epigenetics, et cetera?

February 24

Wikipedia:Reference_desk/Archives/Science/2021 February 24

1. Is it night 50% of the time on average everywhere?

February 25

Wikipedia:Reference_desk/Archives/Science/2021 February 25

1. How much percent General relativity still need to be proven?

February 27

Wikipedia:Reference_desk/Archives/Science/2021 February 27

1. Detergents

February 28

Wikipedia:Reference_desk/Archives/Science/2021 February 28

1. Question about a particular deadly condition for old people
2. Quantum Entanglement