Kim Seok-hoon, 51 years old, said, “I don’t understand why my son, a sixth grader in elementary school, is asking for an MP3 ...

Newton’s experiment remains almost insultingly simple. Sunlight, a darkened room, a glass prism. The conclusion was unavoidable. Colour belonged to light itself. The prism merely made it visible.

Know the latest DDA Junior Secretariat Assistant Syllabus for English, Reasoning, Quantitative Aptitude, GK and Computer here ...

Gels are materials composed of a three-dimensional crosslinked polymer or colloidal network immersed in a fluid. They are usually soft and weak, but can be made hard and tough. Hydrogels are gels that ...