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0 votes
3 answers
130 views

How to dry a cup?

If you wash a cup and shake it out thoroughly so there are no longer any drops of water large enough to move, it seems like the cup ought to dry faster by putting it right side up, since all drying ...
David Gudeman's user avatar
6 votes
2 answers
918 views

Why do coloured water droplets form rings upon drying up?

While cleaning my fountain pen, I spilled some water on the table. The water drops had some ink dissolved in them. When these drops dried up, the deposited pigment density was visibly much higher near ...
AlphaLife's user avatar
  • 12.5k
1 vote
1 answer
374 views

Why does a small puddle of water evaporate faster at the edges than the center?

I have read that ceiling tile stains and coffee ring stains are darker on the edges than the center because the puddles evaporate fastest at the point of contact between the surface, air, and water ...
Oliver G's user avatar
0 votes
2 answers
93 views

Could a window mounted wet cloth sheet chill a room?

Assuming there is a light wind, that construction is partly shaded and a constant water pouring and evaporation of the material is occurring due to the breeze.
Three Dimention Pond's user avatar
0 votes
0 answers
35 views

Why do we feel cool after switching fan? [duplicate]

Please see that my actual question is not similar to this: Why do we feel cool when we turn our fans on? Suppose I switched my fan on. The air particles start moving. Since, their kinetic energy ...
user avatar
0 votes
1 answer
78 views

Mystifying Relative Humidity - That can't be accurate?

While humidifying a room in my home, measuring the Temperature and Relative Humidity (T&RH respectively) every 8 hours, I noticed that RH rises and falls with T when it should be the inverse. I ...
user3067533's user avatar
0 votes
1 answer
235 views

Why my glass spects or windows becone blurr in winter i.e cold weather due to my breath but NOT in summer i.e hot weather?and why disappear after?

I noticed than when I blow up on my spects it get blurr as water vapor condense onmy spects, but after some time it dissappear! How? If water vapor at first place loose heat to my spects as my spects ...
Suresh Chandra Pal's user avatar
-1 votes
3 answers
165 views

Why we spread clothes for fast drying and how evaporation rate become faster then?

Why wrinkled cloth (not spread out) takes time to dry up Look at diagram Here, water molecule on surface of wrinkled area will also evaporate same as non wrinkled area (may be) ! So why it takes time ...
Suresh Chandra Pal's user avatar
2 votes
1 answer
289 views

Why does mist on glasses disappear when you go back outside in freezing weather?

This evening after a walk in the cold weather, about -5 degree Celsius, my glasses were misting up when I got back into the warm house, about +20 degree Celsius. However, shortly after I went outside ...
EquipDev's user avatar
  • 123
2 votes
2 answers
596 views

Why does hair dry faster when I have less hair?

I recently had a haircut, and have noticed that water in my air dries up faster when I short hair. I assume that hair loses water due to evaporation. We have been taught that evaporation is faster ...
PNS's user avatar
  • 2,162
2 votes
1 answer
58 views

Water Evaporation on Earthen Pot

In earthen pot water molecules lose heat energy, so where is the temperature drop more - on the pot's surface or inside water?
Riddhi Akbari's user avatar
45 votes
11 answers
10k views

Why does moving air feel colder? [duplicate]

If temperature is just the average kinetic energy of particles, why would moving air feel colder rather than warmer?
BOUNCE's user avatar
  • 565
6 votes
2 answers
1k views

What causes the milk to suddenly rise up & spill out if not stopped?

Well, when milk is heated in a container its temperature starts rising & water vapor bubbles rise up through it. This initially causes a little and slowly rise in level of milk. But after certain ...
Harish Chandra Rajpoot's user avatar
4 votes
3 answers
2k views

Dumping hot liquid water in sink [closed]

When I make pasta or potatoes, I dispose of the hot water (around 80-100°C) in a metal sink. Am I justified to first pour regular hot tap water on the sink to reduce the amount of steam generated, or ...
nmajoros's user avatar
  • 171
2 votes
0 answers
129 views

Why do rain clouds form in the first place?

Thought process leading to the question It's cold over here in India and I noticed that while breathing out some cloudy thing comes out of my mouth (I found it is called EBC (Exhaled Breathe ...
user avatar

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