All Questions
Tagged with everyday-life popular-science
17
questions
5
votes
1
answer
685
views
What causes this weird shape through frosted glass? [closed]
I was looking at my frosted window and found that the light behind it from the neighbors house looked like this:
Behind the frosted glass is simply an ordinary CFL bulb. The frosting pattern on the ...
- 3,187
3
votes
1
answer
7k
views
If my windows are open on a windy day, the curtains sway and the doors slam shut. Why don't I feel this wind?
I am standing indoors, right in front of my open window, as I see my curtains moving back and forth and I can hear my closed doors shaking. I can also hear the wind howling loudly.
Why don't I feel ...
- 133
2
votes
1
answer
2k
views
How does a tightrope walker return to equilibrium?
I do not understand how tightrope walkers return themselves to equilibrium.
I am not concerned with the direction along the rope or wire where their base can be large, and they are able to move their ...
- 3,100
2
votes
1
answer
1k
views
Are these guard rails truly strong enough?
I'm lay about physics, but I'd like to learn about it behind this question.
A friend criticises and claims that the single strip of traffic barriers (as shown below) would fail and is useless. For ...
user53143
1
vote
0
answers
746
views
Is sitting on a double-decker bus's upper deckmore hazardous than its lower deck? [closed]
Some people have alleged that they feel more 'wobbly' or 'unstable' while seated on the upper deck, than on the lower. Also, they allege that in a car crash accident, sitters on upper floors are more ...
user53143
-1
votes
1
answer
458
views
What is the physics concept in sponge filter
I really need help I want to ask what is the physics concept in Sponge Filter?
- 11
0
votes
1
answer
756
views
Time travel, is it possible? [duplicate]
I see there are many questions with this title, but this one is different, so please give it due thought:
Is time travel possible? If so, Can we go both forwards and backwards in time?
Paradox:
I ...
- 1,128
53
votes
4
answers
372k
views
On a hot day, when it's cooler outside than in; is it better to put a fan in an open window pointing inwards or outwards?
If it's really hot inside, but cooler outside; what is the best way to place a single fan to try and cool a room down?
I always assumed it would be better pointing inwards (and this thread suggests ...
- 632
6
votes
2
answers
7k
views
Why can't I slap an insect into unconsciousness?
So it is summer, which means I have to deal with insects. Today one has made it into my room and while I tried to work this insect was constantly in my face, which caused me waving my hands in the air....
- 991
10
votes
2
answers
2k
views
Movie airplanes and suction
Having watched a recent action movie (with zombies in it) I wondered whether the suction from a hole in the airplane's hull would really be able to rip out luggage, persons and even seating benches.
...
- 9,169
4
votes
2
answers
4k
views
Why do some air-conditioned stores blast you with jets of air as you enter?
I went to a grocery store on a hot day that was very well air-conditioned, and I noticed as I went through the open entrance that there seemed to be a very powerful downward air current right at the ...
- 173
8
votes
2
answers
19k
views
Why do objects sometimes fall on their own?
I have observed sometimes that when I keep some objects precariously balanced, for e.g. some objects in a cupboard, they seem quite stable at the time when I place them there but after a certain ...
- 923
8
votes
2
answers
3k
views
Why is the summer, in the temperate latitudes, in average, hotter that the spring?
It is common knowledge that the transition from the Spring to the Summer season occurs in the Summer Solstice when the "Sun reaches its highest excursion relative to the celestial equator on the ...
- 183
3
votes
2
answers
5k
views
Performance of a thermos bottle relative to contents
I'm not a physicist but I majored it at high school (a long time ago) and I study university math.
Me and my roommate discussed whether the performance of a Thermos bottle is influenced by how full ...
- 133
29
votes
5
answers
23k
views
Does a car consume more fuel when it's raining?
Yesterday my wife asked me that question, and I couldn't answer.
Consider a car, in a sunny day, and that is consumes x gallons per mile. Considering that everything is equal, except that it's ...
- 402