Question

Discuss the scope of physics in development of technology

Answer 1

Solid state physics is responsible for semiconductors, which are responsible for semiconducting diodes and transistors, which are in turn at the heart of every memory chip and processor in every computer in the world. Most of the specifics of circuits are governed by equations studied in electrodynamics.

Before this, computers were made by vacuum-tube diodes, which were also a cute physics trick. 

Statistical mechanics today is fundamental to understanding biology and developing new biotechnology. Especially, a lot of work is now being done to develop new proteins that can do all sorts of useful stuff in the human body; our present methods to predict what shapes they fold into are exclusively based on stat mech (Monte-Carlo approaches) and direct simulations of Newton's laws.

Quantum mechanics explains the periodic table used in chemistry; and there is a whole discipline of chemistry now called "physical chemistry" which explains why various molecules have the shapes and sizes they have. There are now fields like quantum optics and quantum computing that are examining the directions that we can take it, technology-wise.

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