Science Facts of February - 2015

27

Friday

Question of the Week

Have you taken a cup of coffee on time that you are particularly feeling weary or sleepy? Then you must’ve experienced that the weary feelings rapidly disappear, making you capable to keep on going for a few hours. How do you think coffee manages to do this?


26

Thursday

Today’s Science Message

25

Wednesday

Today’s Science Message

Have you ever made a mess on the floors and your clothes while trying to carry around your cup of drink? New experiments have shown that creating foam on top of a beverage can cut down on the spilling that occurs while moving around, because of the friction taking place between the bubbles and the cup’s walls.


24

Tuesday

Today’s Science Message

Did you know that eating strawberries, apples and oranges can whiten your teeth? Such fruits contain Malic Acid which has the ability to remove stains from teeth. However it is also said by the dental hygienists not to snack on sugary fruits too much as bacteria feed on sugars to produce other acids that weaken the enamel, leading to cavities.


23

Monday

Answer for the Question of the Week

Radio waves have a longer wave length compared to TV waves, allowing radio waves to bend more around hills (Diffraction). The longer the wave length, the better the wave diffracts. This doesn’t happen well in TV waves as the wave length is much shorter. Hence TV waves don’t spread around the hills. Therefore we have use an external antenna to grasp the TV signals.


20

Friday

Question of the Week

Unlike when we listen to the radio, we always take use of an external antenna when we watch the TV, since it’s tricky to get hold of the signals. Specially, if you live in mountain areas, you can observe this well. Explain the science behind this.


19

Thursday

Today’s Science Message

Wouldn’t it amaze you to know that a spider web is sort of a predator itself, even though it’s not alive? The insects that fly around are usually charged positive due to their shedding of electrons, while the spider web is charged negative or neutral. So when an insect flies by with the opposite charge, the web literally reaches out and grabs it!


18

Wednesday

Today’s Science Message

Did you know that caterpillars almost completely liquefy when they turn into butterflies? In this process the caterpillar releases enzymes that digest its own body and the butterfly begins to form from the nutrient rich soup that’s left in the chrysalis.


16

Monday

Answer for the Question of the Week

The lunar cycle is quite independent from the sunrise and sunset. Unlike most people believe, the sun doesn’t actually have to set for the moon to rise. Whenever the moon is up in the sky (even during the day), and reflects light from the sun, we see it.


13

Friday

Question of the Week

12

Thursday

Today’s Science Message

Have you ever thought of giving your respiratory system a break, or living a mermaid’s life underwater? Well now, scientists have allowed you to live that dream by inventing an injectable Oxygen particle that lets you survive without breathing.


11

Wednesday

Today’s Science Message

Isn’t it bizarre that there’s a kind of wasp species (Pepsis Formosa), in which the female wasps paralyze large spiders with their stings and lay eggs on the bodies so that their newborns could get fresh meat after they come out of the eggs?


10

Tuesday

Today’s Science Message

Although marble is considerably a stable chemical compound, it could get discolored when exposed towards huge amounts of pollution particles. A great evidence that supports this fact is the famous Taj Mahal’s pristine white marble turning brown from the environmental pollution in Agra.


9

Monday

Answer for the Question of the Week

We feel pain when the pain sensors in our body get stimulated and they send the messages to our brain. These sensors are stimulated by specific chemical complexes, which are produced by the cells in those places where it hurts. When painkillers are consumed they make their way into the bloodstream and find the places where there are excessive amounts of these chemicals and reduce their production. Likewise there are several mechanisms that painkillers use to stop the pain. What they do ultimately is, interfere with the nervous system’s transmission of the nerve signals we perceive as pain so we no longer feel the pain.


6

Friday

Question of the Week

Have you consumed painkilling pills when you get aches in your body? How do you think the painkiller finds the very spot where it hurts and makes it hurt less, even though you don’t directly apply it there?


5

Thursday

Today’s Science Message

2

Monday

Answer for the Question of the Week

The ciliary muscles help us to get a clear view of the things around us by contracting and relaxing accordingly, which causes the eye lens to change its curvature. To focus the parallel light rays which come from distant objects, the eye lens reduces its curvature by relaxing the ciliary muscles. The retraction of the ciliary muscles happen when it’s necessary to focus the divergent light rays that come from objects that are situated closely, and as a result, the curvature of the eye lens increases. Likewise the ciliary muscles are exercised thoroughly when continuously looking from distant objects to closer objects, improving your eyesight.