When the pump is switched on and the air in the jar is gradually removed, the pressure in the jar decreases. There will be fewer air...

At sea level (where most of us are), the standard atmospheric pressure is about 101325 Pa. The boiling point of water is at  100 oC which...

We have learned that silver smooth reflective surface is a poor absorber , poor emitter or a good reflector of infra-red radiation. How...

The 3 states of matter –  solid, liquid and gas. In general, when a body is heated, it expands and volume increases. The mass remains the...

Hand boiler toy is a demonstration of thermal transfer and how the 3 states of matter interact. The coloured liquid inside is usually...

In the three states of matter, in general, solid is the best conductor as the particles are closely packed in an orderly manner, hence...

he paper over metal or over plastic/wood will get burned faster? Everyone knows that metal is a good conductor of thermal energy. But...

Depending on the experiment, the recording of measured time may be to the nearest 0.1 s or the nearest 1 s, even though a typical digital...

This simple toy is made possible using convection current in the air. The ‘fan’ of the carousel is similar to the windmill we are...

Convection is a process in which thermal energy is transferred within a fluid (liquid or gas) due to the difference in density which...

adiometer is a device for measuring the amount of infrared radiation. It consists of freely pivoted rotor with four vanes perpendicular...