Clean Rooms: Part Of Our Daily Lives

Although most people don’t know about it, clean rooms play a huge role in our individual lives. Everything from packaged food and beverages, electronics like TVs and computers, medicines and semiconductors are all produced in a clean room.

So what is a clean room? These rooms are controlled environments that have strict standards for temperature, humidity and air cleanliness. The standards for clean rooms vary based on the type of work that is being conducted within the room.

Controlled environments use a host of different devices to ensure cleanliness. Continue reading Clean Rooms: Part Of Our Daily Lives

Excretion in Plants

Excretion in Plants

Introduction to excretion in plants

Excretion is the process of elimination of waste materials from the body. Excretion in plants is much simpler than that of animals and as such it does not pose any serious problem in plants. There are several reasons for this:-

1. The rate of catabolism is comparatively much slower in plants than in animals having the same body weight and consequently the rate of accumulation of body waste is much slower.

Introduction to excretion in plants

Excretion is the process of elimination of waste materials from the body. Continue reading Excretion in Plants

Corundum Mineral

Better known to the public as sapphire and ruby, the mineral species corundum is a widely distributed oxide of aluminum which ranks next to diamond in hardness and sometimes occurs so abundantly that it is mined for abrasive purposes. However, clear gemstone varieties are far less common than the course abrasive types, one of which “emery” is familiar to craftsmen as the coating on emery paper and abrasive wheels. In North America, much abrasive corundum has been mined from deposits in Canada and the Eastern part of the US, while clear gem quality material has been obtained in large quantity from Montana.

Some specimens exhibit the beautiful effect known as “asterism”, forming the ever popular star sapphire and star ruby.

By custom, the individual species name ruby is applied only to gem material of pure intense red, all other colors being sapphire. Continue reading Corundum Mineral