Closed economy is an economy in
which no activity is conducted with outside
economies. A closed economy is self-sufficient,
meaning that no imports are brought in and no
exports are sent out. The goal is to provide
consumers with everything that they need from
within the economy's borders.
ভাষা ও ভাষার উৎপত্তি
Plasma Physics (প্লাজমা পদার্থবিদ্যা)
Laser (লেজার)
Quantum materials (কোয়ান্টাম উপকরণ)
Particle physics (কণা পদার্থবিজ্ঞান)
Optics (অপটিক্স এবং ফোটোনিক্স)