That is because warm air outside the glass contains moisture and that moisture condenses on cold surfaces since cold air on the glass surface cannot hold as much moisture as warm air. It is the same effect as fog on the bathroom mirror after running a hot shower.
Water vapors are condensed on the cold surface.
As the liquid inside the glass tumbler is cold it condenses the water vapour in the atmosphere. This explains why tiny droplets of water are found on the outer surface of the glass tumbler.
Water droplets form when the water vapor cools. The cooling causes it to condense into water. A warm glass does not cause cooling or condensation, so no water droplets.
Water can exist in three states; as liquid water, as solid ice, and as the gaseous water vapor. In the presence of a cold surface such as the outside of a glass containing ice, vapor in the air will condense into liquid water on the cold outside surface.
because there is no friction between pencils and glass and glass is harder than the lead in the pencil .and glass surface is smoother than the surface of paper
the main reason is condensation of water vapour in the air to water droplets
As the liquid inside the glass tumbler is cold it condenses the water vapour in the atmosphere. This explains why tiny droplets of water are found on the outer surface of the glass tumbler.
because its condensation. Heat evaporates the water and the cold surfaces condense the vapour back to liquid.
This is because the air around the tumbler contains water vapour in it. When these water vapour came in contact with the cold, they contact with cold water, loses energy and converted into liquid state, which we see as water droplets.
The cold glass cools the air surrounding the glass. This in turn condenses water vapor in the air such that little water droplets form around the surface of the glass. These droplets are what you recognize as being moist :)
Warm air can hold more moisture than cold air. When warm air comes in contact with a cold glass, it is cooled. The moisture that can no longer be held in the cooler air condenses on nearby surfaces, in this case the glass.
If warm moist air comes into contact with the cold outer surface of a glass of water, condensation takes place.
The hot heat from the hot water turns evaporates. Once it reaches or touches a cool surface (mirror), the heat would condense and turn into water droplets. Therefore, water droplets are found in the mirror when you bath.
Water vapor in your breath condenses as tiny droplets of liquid water on the cold glass surface.
the water droplets indicate that the air is cooler on one side of the glass. If the droplets are inside, then the outside is cooler. If the droplets are outside, it means the inside is cooler.
This is called "condensation" on a glass, and "dew" if it occurs on grass / leaves. When the "dew point" of air is above the temperature of the surface of the glass, condensation will occur as humidity from the air releases heat into the glass and changes state from gas to liquid.
this is called condensation in the water cycle it forms water droplet because when the liquid turns into gas the particles move and when they spread apart and float away some get stuck on the sides of the glass cup. Then with enough of the gas particles come together turning it into droplets and goes back into water to do it all over again.
Surface tension of water draws it into a larger drop. It will do that on any nonporous surface- metal, glass, smooth plastic, etc.