User Luaan

82 votes

Accepted

Why is it cold on the sea floor if pressure heats things?

answered Feb 4, 2016 at 13:17

64 votes

Why is air not sucked off the Earth?

answered Jan 26, 2017 at 13:51

58 votes

Accepted

Why is it possible to drive a nail into a piece of wood with a hammer, but it is not possible to push a nail in by hand?

answered Feb 8, 2016 at 16:35

44 votes

Accepted

What is behind the definitions of work and energy?

answered Aug 31, 2016 at 12:49

37 votes

Accepted

How does the light source fire a single photon in the double-slit experiment

answered Aug 1, 2016 at 12:30

37 votes

Accepted

Why do we feel heat from infrared light but not from shorter wavelengths?

answered Dec 12, 2016 at 17:10

35 votes

Accepted

Can sugar be affected by a magnetic field?

answered Nov 30, 2015 at 12:30

34 votes

Accepted

Is there anything in the universe that cannot be compressed?

answered Aug 31, 2019 at 9:53

28 votes

Does information have mass?

answered Oct 5, 2020 at 7:13

21 votes

Why does a system try to minimize its total energy?

answered May 12, 2016 at 17:10

18 votes

How do we know neutrons have no charge?

answered Sep 23, 2019 at 8:46

16 votes

Why can't we produce gravitational waves in the lab?

answered May 17, 2017 at 8:35

15 votes

How radioactive is uranium?

answered Aug 8, 2016 at 15:55

12 votes

How can we see an atom now? What was the scale of this equipment?

answered Feb 15, 2018 at 0:29

11 votes

Why does matter exist in 3 states (liquids, solid, gas)?

answered Mar 9, 2016 at 13:27

11 votes

Accepted

Other explanation for cosmological redshift?

answered Oct 31, 2014 at 8:42

10 votes

Why isn't the color of a molecule a combination of the colors of its component atoms?

answered May 12, 2015 at 7:22

10 votes

Can there be an atomic nucleus where there are more protons than neutrons?

answered Oct 8, 2019 at 8:44

7 votes

Conservation of Mass and Energy

answered Mar 11, 2019 at 8:28

6 votes

Do photons occupy space?

answered Jun 18, 2014 at 11:31

5 votes

How do neutrinos pass through the sun so quickly?

answered Aug 31, 2016 at 7:47

5 votes

The speed of light upon reflection

answered Jul 21, 2016 at 14:37

5 votes

Accepted

How are neutrons made?

answered Sep 26, 2019 at 13:22

5 votes

Why is matter-antimatter asymmetry surprising, if asymmetry can be generated by a random walk in which particles go into black holes?

answered Oct 3, 2019 at 8:03

5 votes

Why does water boil in bubbles?

answered Nov 22, 2021 at 13:28

4 votes

Why can electric cars recoup energy from braking, but a spaceship cannot?

answered Mar 9, 2017 at 13:33

4 votes

Could a candle theoretically melt iron?

answered Aug 8, 2016 at 13:48

4 votes

Why does the sun make me feel warm?

answered Aug 27, 2015 at 8:32

3 votes

What was the initial source of energy?

answered Feb 10, 2016 at 13:44

3 votes

Why are people weightless whilst in orbit around the Earth? ISS? Satellites?

answered Apr 23, 2014 at 11:31

Stack Exchange Network

57 Answers

Why is it cold on the sea floor if pressure heats things?

Why is air not sucked off the Earth?

Why is it possible to drive a nail into a piece of wood with a hammer, but it is not possible to push a nail in by hand?

What is behind the definitions of work and energy?

How does the light source fire a single photon in the double-slit experiment

Why do we feel heat from infrared light but not from shorter wavelengths?

Can sugar be affected by a magnetic field?

Is there anything in the universe that cannot be compressed?

Does information have mass?

Why does a system try to minimize its total energy?

How do we know neutrons have no charge?

Why can't we produce gravitational waves in the lab?

How radioactive is uranium?

How can we see an atom now? What was the scale of this equipment?

Why does matter exist in 3 states (liquids, solid, gas)?

Other explanation for cosmological redshift?

Why isn't the color of a molecule a combination of the colors of its component atoms?

Can there be an atomic nucleus where there are more protons than neutrons?

Conservation of Mass and Energy

Do photons occupy space?

How do neutrinos pass through the sun so quickly?

The speed of light upon reflection

How are neutrons made?

Why is matter-antimatter asymmetry surprising, if asymmetry can be generated by a random walk in which particles go into black holes?

Why does water boil in bubbles?

Why can electric cars recoup energy from braking, but a spaceship cannot?

Could a candle theoretically melt iron?

Why does the sun make me feel warm?

What was the initial source of energy?

Why are people weightless whilst in orbit around the Earth? ISS? Satellites?