How long a train move after applying breaks ???

 When we are riding a bike or a car, it will come to a halt after moving a little distance. Suddenly it will not stop   !!! 

Approximately 50 to 60 meters, vehicle travels after applying break. 

How much time will a train take to completely stop   ??? 

The distance taken by a train to come to stand still depends on ----

1.  It's speed

2.  Capacity of breaks

3.  Condition of railway track

Usually a train will come to halt after travelling 800 to 1200 meters. 

The time taken and the distance covered to come to stand still position depends on its speed. 

More speed the train travels,more time it needs to stop. 

Not only this, it will cover more distance before coming to stop. 

Capacity of breaking system as well as type of terrain on which it is moving also matters   !!! 

Differentiating between centipedes and millipedes

  Though both centipede and millipedes are anthropods with segmented body and jointed legs, their form  diet and environmental roles are quite different.

1.   Centipedes have flatter bodies with segments that each bear a pair of legs.

       Millipedes have cylindrical body with each segment bearing two pairs of legs.

2.  Centipedes are carnivorous.  They hunt  insects, spiders and small cockroaches.

       Millipedes are detritivores,  feeding on decaying plant material , microbial decomposition.

3.  Centipedes are often seen indoors.  They prefer humid environments like bathrooms and pavements.

        Millipedes are often seen outdoors.  They thrive in moist habitable rich in organic matter.

4.  When threatened, centipedes may bite.  Though their venom is not lethal to humans, it feel like bee sting.

       When threatened, lacking venom, millipedes  roll into tight coils.

Why do humans have eyebrows ??

 Humans have eyebrows for  ===

1.  Protecting our vision from physical irritants 

2.  As a tool for social communication 

The arched shape and outward direction of eyebrow hair keeps sweat and rain away from eyes. 

They help catch dust and dirt before it can fall into eyes.

They help to reduce the glare from bright light.

Eyebrows are critical to identify people.

Eyebrows allow us to signal complex emotions such as skepticism, sympathy and surprise.

Why atta dough turn black in refrigerator during summer ??

  It is very common practice to knead dough in advance to save time and energy.

This extra dough is generally stored in refrigerator. Over time, it turns black or grey.

It happens in summer.  WHY   ??

The primary reason behind this discoloration is  oxidation.

When we knead the wheat flour with water, it is exposed to air and oxygen reacts with compounds in flour, leading to darker colour.

The enzymes present in wheat flour, remain active even in cooler temperature of refrigerator. They continue to react over time.

Fermentation is also a reason for discoloration.. 

During summer,  dough begin to ferment even though it is refrigerated  !!!

It causes a mild sour smell along with darker appearance.  

SO HOW TO STORE  ???

Always apply a thin layer of oil over the dough.

Refrigerating in small portions immediately after kneading is a smart trick to avoid spoilage.

Which is the largest bridge in the world ??

 The Danyong - Kunshan grand bridge in China is the largest bridge in the world.

It is 164.8 km long.

The bridge was made to connect cities.

It goes over fields, rivers, lakes and small towns.

It is built to survive storms, floods and even earthquakes !!!

It is part of a train line.