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uhoh's user avatar
uhoh's user avatar
uhoh
  • Member for 9 years, 3 months
  • Last seen this week
  • Taipei, Earth
40 votes
Accepted

What is this wavy light coming through my blinds?

16 votes
Accepted

How is light emitted by an incandescent lamp?

13 votes

Physical difference between moonlight and sunlight

11 votes

How can I determine if an element undergoes electron or positron emission?

10 votes
Accepted

How come a mobile phone signal is blocked by aluminium foil, but Wi-Fi gets through?

8 votes
Accepted

Parker Solar Probe passing extremely close to the Sun; what relativistic effects will it experience and how large will they be?

7 votes

Where can I find visible/radio telescopic observations of the center of the Milky Way galaxy?

5 votes
Accepted

Can air be ionized using microwaves?

5 votes
Accepted

Can a air tight tube be used to siphon water very high vertically as long as the end location is lower than the start?

5 votes

Has the weak force ever been measured as a force?

5 votes

How do we measure time?

4 votes

Spherical mirrors or parabolic mirrors?

4 votes

Transfer of energy from gravity back to other "more familiar" forms of energy?

3 votes

How much effect does painting a domestic radiator have?

3 votes
Accepted

What phenomena occur in a low voltage arc between copper and graphite electrodes, and why is the result dependent on electrode polarity?

3 votes
Accepted

How to quantify elevated tails of a Gaussian like signal?

3 votes

What will we learn from further LIGO events?

3 votes

Why is there a maximum humidity?

2 votes

Why do we still use pseudo forces?

2 votes
Accepted

What aspects of the design of a beamsplitter cube determine wavefront error/distortion?

2 votes

What happens to the non-axial photons of a laser cavity?

2 votes

Simulate / plot electrostatic field

2 votes

Skydiving without a parachute or a wingsuit?

1 vote
Accepted

Launch small satellite?

1 vote
Accepted

Reflecting photons and conservation of energy

1 vote
Accepted

Why would a modern smartphone not work if the theory of general relativity hadn't been discoverd?

1 vote

Is there anything like a "polarizer rejection spectrum"?

1 vote
Accepted

Rocket speed (Is the equation my choose is the correct one and is my (asumption) and calculation is correct with regard to Hawking's sentences

1 vote

Can microscope lenses be non-spherical?

1 vote
Accepted

How does a Wehnelt electrode both extract and focus electrons?