Archives

Extrinsic Semiconductors

In our article on semiconductors, we discussed that semiconductors are amorphous or crystalline solids that have a conductivity between that of a... View Article

Optical Density

Optical density is the process of transmission of light or other electromagnetic radiation by matter. The process of emission and absorption... View Article

Enthalpy

Enthalpy is significant because it tells us how much heat is there in a system (energy). Heat is essential because it allows us to produce useful... View Article

Current Density

We know that the invention of electric current revolutionised living and lifestyle. It is the fundamental source to power many devices like fans... View Article

Reverberation

When attending an assembly inside the school auditorium, you must have observed how different the orator's voice appears from the original. Also,... View Article

Reflection of Waves

We encounter situations involving the reflection of waves all around us, for example, in the phenomenon of echo, the sound reflected from a... View Article