User Petr - Physics Stack Exchange

88 votes

8 answers

10k views

Could a "living planet" alter its own trajectory only by changing its shape?

asked Jun 14, 2016 at 11:39

69 votes

2 answers

8k views

Why does wet hair keep its shape when it dries?

asked Jun 25, 2016 at 20:40

46 votes

1 answer

112k views

Does the mass of a battery change when charged/discharged?

asked Aug 17, 2012 at 17:31

15 votes

3 answers

18k views

Does sound propagate further in freezing weather?

asked Jan 26, 2013 at 22:23

11 votes

1 answer

816 views

What pressure or tension occurs in a glass jar when I pour boiling water inside?

asked Mar 20, 2013 at 20:28

10 votes

2 answers

372 views

Would a collision of two black holes emit any electromagnetic radiation?

asked May 10, 2015 at 18:51

7 votes

1 answer

36k views

Grid pattern on a car window when viewed through polarized sunglasses

asked Aug 9, 2016 at 12:06

6 votes

5 answers

1k views

Is an event horizon absolute to all observers?

asked May 24, 2015 at 8:59

6 votes

1 answer

424 views

Why do wind power plants have just 3 blades? [duplicate]

asked May 13, 2013 at 12:42

5 votes

1 answer

443 views

Why do baked goods "fall" if exposed to sudden cooler air?

asked Jun 18, 2013 at 12:23

4 votes

1 answer

226 views

Is there a lower bound on energy needed to transfer one bit of information?

asked Nov 5, 2014 at 18:33

4 votes

3 answers

147 views

How much energy is radiated when matter falls into a black hole

asked Nov 30, 2014 at 16:54

3 votes

1 answer

480 views

What's the principle used in infant breath monitor devices?

asked Feb 23, 2013 at 15:13

1 vote

1 answer

83 views

Can we repulse metter by specially crafted gravitational waves?

asked Jun 14, 2016 at 11:45

1 vote

0 answers

211 views

How does a rotating black hole look like? How would it be to descend into one?

asked May 10, 2015 at 17:54

0 votes

1 answer

1k views

Is thinner glass more heat resistant?

asked Apr 4, 2015 at 7:48

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16 Questions

Could a "living planet" alter its own trajectory only by changing its shape?

Why does wet hair keep its shape when it dries?

Does the mass of a battery change when charged/discharged?

Does sound propagate further in freezing weather?

What pressure or tension occurs in a glass jar when I pour boiling water inside?

Would a collision of two black holes emit any electromagnetic radiation?

Grid pattern on a car window when viewed through polarized sunglasses

Is an event horizon absolute to all observers?

Why do wind power plants have just 3 blades? [duplicate]

Why do baked goods "fall" if exposed to sudden cooler air?

Is there a lower bound on energy needed to transfer one bit of information?

How much energy is radiated when matter falls into a black hole

What's the principle used in infant breath monitor devices?

Can we repulse metter by specially crafted gravitational waves?

How does a rotating black hole look like? How would it be to descend into one?

Is thinner glass more heat resistant?