Past events that influence things in the present.

person who is studying or has expert knowledge of one or more of natural or physical sciences. People who are trained in a science.

(Of an object) stick out above the surface. To state something in a legal or official way.

Cooking appliance using electromagnetic waves. To heat or cook something in a microwave.

gladly received. used to greet someone in polite or friendly way. Friendly greeting to someone who has arrived. To accept or receive something happily and gladly.

Glow sometimes seen in the sky after sunset the pleasure of remembering some pleasant event.

all existing matter and space considered as whole.

Violent release of energy (e.g. from a bomb).

optical instrument designed to make distant objects appear nearer, containing arrangement of lenses, or of curved mirrors and lenses. slide or cause to slide into itself, so that it becomes smaller.

find unexpectedly or while searching.

Factual proof that helps to establish the truth. be or show evidence of.

action or process of discovering or being discovered.

intellectual and practical activity encompassing systematic study of structure and behaviour of physical and natural world.

To tell the appearance, sound, smell of something.