HAVE YOU COME ACROSS THE WORD ” CARAT”?

It describes purity of gold and weight of diamond.

In modern periodic table there are 118 elements known to us, 92 of which are naturally occurring while the remaining 26 have been artificially created.

But from these 118 elements, billions of compounds are formed – some naturally occurring and some artificial.

The temperature Of gases can be expressed in Kelvin scale also.

Kelvin is the SI unit of temperature.

Dry ice, sometimes referred to as “cardice” is used primarily as a cooling agent.

It is widely used for industrial refrigeration and transporting frozen food.

It can maintain a temperature even lower than ice and it does not leave any liquid behind as it directly changes to gas.

The heat from our hand is enough to change solid metal gallium into liquid.

THE MOST IMPORTANT DISCOVERY:

Richard Feynman, a very famous and extraordinary scientist (1918-1988) had said: The most important scientific discovery of the last ten thousand years is the ATOMIC FACT!

Convex  mirrors are installed on public roads as  traffic safety device.

They are used in acute bends of narrow roads such as hairpin bends in mountain passes where direct view of oncoming vehicles is restricted.

It is also used in blind spots in shops.

We must be proud that an indian- born physicist narinder kapany is regarded as the father of fiber optics.

Used optical fibres to transmit and get back good images.

In addition, kapany’s work is now used in lasers, biomedical instrumentation, solar energy and pollution monitoring.

He is the one to have coined the name fibre optics.

WHEN YOU GO FOR A RIDE IN A MERRY – GO – ROUND IN AMUSEMENT PARKS, WHAT FORCE DO YOU EXPERIENCE ?

we experience an outward pull as merry-go round rotates about vertical axis.

This is due to centrifugal force.