HOW DO WE SEPARATE CREAM FROM MILK ?

A Separator is a high speed spinner.                     

It acts on the same principle of centrifuge  machines.                     

The bowl spins at very high speed causing the heavier contents of milk to move outward in the bowl pushing the lighter contents inward towards the spinning axis.                     

 Cream is lighter than other components in milk                  Therefore, skimmed milk which is denser than cream is collected at outer wall of the bowl.                         

 The lighter part of cream is pushed towards the centre from where it is collected through pipe.

CAN A BODY HAVE ZERO VELOCITY AND FINITE ACCELERATION ?

Yes, whena body is thrown vertically upwards in space, then at the highest point, the body has zero velocity and acceleration equal to the acceleration due to the gravity.

The magnitude of instantaneous velocity is equal to the instantaneous speed at the instant.

The speedometer of an automobile measures the instantaneous speed of the automobile.

In a uniform motion in one dimension, the average velocity= instantaneous velocity.

Instantaneous velocity is also called velocity and instantaneous speed also called simply speed.

The shell of an egg is 12% of its mass.

A blue whale can weigh as much as 30 elephant and it is as long as 3 large tour buses.

Athirampakkam and gudiyan cave yielded both early and middle palaeolithic artefacts.

When, barely and peas were domesticated around 10,000 years ago.

Fruits and nut trees were domesticated around 4,000 BCE.

They comprised olives, figs, dates, pomegranates and grapes.

The DNA of chimpanzee is 98% identical to that of a human being.

The chimpanzee and the pygmy chimpanzee ( also known as BONOBO) are our closest living relatives.

In villages, people still uses different time scale other than SI time units.

One hour = 2.5 NAZHIJAI.One day = 60 nazhijai, Day time = 30 nazhijai and night time = 30 nazhikai.

In day time nazhikai starts at 6 am and ends at evening 6 pm.

Total nazhikai in daytime = 12 hours× 2.5 nazhikai = 30 nazhikai.

Similarly night time the nazhikai starts at 6 pm and ends next day 6 am.

Total nazhikai in night time = 12 hours × 2.5 nazhikai = 30 nazhikai.

For example,night 12 pm is equivalent to 15 nazhikai ( 6 hours ×2.5 nazhikai = 15 nazhikai).

1 TMC is ( thousand million cubic feet) hundred crore cubic feet.

1 TMC = 2.83×10^10 litre.

1 TMC is approximately 3000 crore litres.

The total length of all the blood vessels in human body is 96,000 km.When born,a baby giraffe is 1.8 m (6ft) tall.

A chameleons tongue is twice the length of its body.