All Questions
9
questions
0
votes
1
answer
48
views
Has physics ever tried to explain how do we get "sensorial experiences"? [closed]
To be clear about what I mean with "sensorial experiences", let's take for example our visual experiences. Certainly, physics (and other sciences) explains a whole process which involves light ...
- 1,252
1
vote
1
answer
3k
views
experiencing vibration when in contact with my desk computer and a rubbing a friend's arm [closed]
I was with a friend sitting next to my desk computer, I put my hand on the computer and the other one on my friend who is in contact with the floor. The thing is that when I rub my hand on his arm we ...
- 41
1
vote
0
answers
58
views
How much heat do we lose perspirating?
How can I calculate the heat my body loses from perspirating? For example, X Jouls per liter of sweat.
- 151
19
votes
5
answers
7k
views
How is it possible for other animals to have better night vision than humans, who can detect individual photons?
According to the Wikipedia article on night vision,
Many animals have better night vision than humans do, the result of one or more differences in the morphology and anatomy of their eyes. These ...
- 48.4k
0
votes
1
answer
685
views
Electric discharge through my knuckle
In some particular days, it seems that my car is somehow at a different potential from the ground. When I get out my car and I wear my sneakers (that I think are better insulators than other kind of ...
- 1,764
1
vote
5
answers
18k
views
Lifting and putting down a weight
A man in a gym lifts a weight and then puts it down where it was before.
What can be said about the work done by the man to the weight?
Can it be equal in absolute value to the work made by the ...
- 673
-4
votes
3
answers
3k
views
Life and Death, and Energy Conservation
Humans are born and they die. When we are born, is energy created? Or is it just some amount of energy that our mother gives us? Doesnt she take this energy from the surroundings? If so, then when we ...
- 1,128
3
votes
3
answers
996
views
Harmlessness of a pure alpha decay particle
From my high school physics class I remember that there are some particles which exhibit pure alpha decay (i.e. alpha decay to there stable isotope), like Po-210, Po-211 and Bi-209.
What I also know ...
- 2,905
5
votes
1
answer
2k
views
What is the minimum pressure difference for your ears to pop?
I'm assuming the answer to this largely varies from person to person. Assuming you could instantly change the pressure around your head by amount $\Delta p$, what is the minimum $\Delta p$ for your ...
- 1,575