Quasi-rent is the surplus which is
received in the short period because of demand
exceeding the supply by the man made factors
besides land. It is an analytical term in
economics, for the income earned, in excess of
post-investment opportunity cost, by a sunk cost
investment. In general, an economic rent is the
difference between the income from a factor of
production in a particular use, and either the cost
of bringing the factor into economic use
(Classical factor rent), or the opportunity cost of
using the factor, where opportunity cost is
defined as the current income minus the income
available in the next best use.
ভাষা ও ভাষার উৎপত্তি
Plasma Physics (প্লাজমা পদার্থবিদ্যা)
Laser (লেজার)
Quantum materials (কোয়ান্টাম উপকরণ)
Particle physics (কণা পদার্থবিজ্ঞান)
Optics (অপটিক্স এবং ফোটোনিক্স)