Why data centers use so much freshwater ??

 Computers get super hot when they run 24/7. If they overheat, they will  crash 

So to keep the server cool, water is used.

Data centres have thousands of servers stacked together. They make heat like giant ovens  !!!

 Most common type of cooling used is 

            EVAPORATIVE COOLING  !!!

The cold water is run through pipes or spray it in cooling tower. Water absorbs the heat and then evaporates into air.

Evaporated water is gone. So every time new freshwater has to be used  !!!

Servers don't like dry air or static !!!

Water is used for humidifying air or cooling. A big data center uses millions of litres of water every day just for cooling.

Nowadays, wastewater is being reused.....

Which country flag ??

 This question was asked on Koun Banega Karodpati program.

Question 

Which country flag is called Hinomaru  ??

1.  South Korea

2.  Japan 

3.  China 

4.  Mongolia 

Answer 

Hinomaru  =  Circle of the Sun in Japanese  !!!

Japan's flag is a simple white flag with a big red circle in the middle which represents  Sun ....

Japan is also called Land of Rising Sun  ......

Correct Answer     JAPAN  !!!

Why do cows struggle to walk downstairs ??

 :Cows CAN go downstairs, but they are too scared and their body design makes it very hard. Up is okay, down is nightmare.   !!!

4 Reasons - =----

*1. Eyes = Bad Depth Perception*

- Cows have eyes on side of head, not front like humans.

- They see 330 degree around, but *no 3D depth*. Stairs look like scary cliff to them. They cannot judge where next step is.

- Like we walking downstairs with one eye closed.

*2. Knees Don't Bend That Way*

- Cow's front knees bend backward?

 No.

- To go DOWN, they need to put front legs down first, but heavy head + 600 kg body weight pushes forward.

- Their back legs cannot bend enough to lower body slowly. So they feel they will fall head-first.

*3. Too Heavy at Front*

- Cow = Heavy front (big stomach + head). Going up, front heavy helps pull up.

- Going down, all weight goes on weak front legs. Feels like car with no brakes going downhill.

*4. Never Practiced*

- In nature, no stairs! Cows walk on flat fields. They never learn stair skill as calf.

- Horse also same.

- People say "Cows physically CANNOT go downstairs" - *FALSE.*

- They CAN physically, if forced. But they will likely fall, break leg, get injured.

- So farmers never make them do it. Once cow goes upstairs in barn (happened in old barns), farmers needed fire brigade to rescue it down with ramp.

Which element ???

 This question was asked on Koun Banega Karodpati program.

Question 

Which element at room temperature reddish grey lustrous powder  ??

1.  Bromine 

2.  Silicon 

 3.  Selenium 

4.  Phosphorus 

Answer 

Bromine is liquid at room temperature   !!!

Bromine is ruled out  ...  

At room temperature, silicon is a solid element.

Not a powder !!!

On crushing, it becomes powder.

But it is only grey in colour 

Silicon ruled out   .....

 

I don't know much about selenium.....

Correct answer   RED PHOSPHORUS  !!!

Red phosphorus is reddish grey powder at room temperature.

Even selenium is reddish grey powder at room temperature.

People are familiar with Red Phosphorus  !!!

So answer is Red PHOSPHORUS  .......

Colourful currency notes

 These banknotes are miniature canvases featuring rare wildlife, dramatic landscapes  to architecture and history  !!!

They are beautifully designed such that spending one almost feels wrong  !!!

They are   ------     

           

           1.  Seychelles Rupees ,  Seychelles 

           2.    Swiss Franc ,  Switzerland 

           3.  Costa Rican Colon ,  Costa Rica

           4.   Bermudian Dollar, Bermuda 

          5.   New Zealand Dollar ,  New Zealand 

          6.   Norwegian Krone,  Norway 

          7.  Mexican Peso , Mexico