The day of Vaisakh Purnima,
which usually falls in the month of May, is
considered most sacred by Buddhists all over the
world. Buddha attained Supreme Enlighten or
Buddha hood, beneath the Bodhitree at Boddha
Gaya. Forty-five years later at the age of eighty,
he finally passed away in Parinivana on the same
day of the year at Kushinagar. Vaisaka Purnima
is celebrated especially in Boddha Gaya,
Lumbini and in Kushinara as they are the holy
places that were con nected with the blessed
ones birth, enlighten and the Parinirvana.
ভাষা ও ভাষার উৎপত্তি
Plasma Physics (প্লাজমা পদার্থবিদ্যা)
Laser (লেজার)
Quantum materials (কোয়ান্টাম উপকরণ)
Particle physics (কণা পদার্থবিজ্ঞান)
Optics (অপটিক্স এবং ফোটোনিক্স)