Probably you don't know

  In the movie when the crew descend to Mann's planet the ranger scrap the edge of an ice clouds. These clouds are largely frozen "Dry ice"(solid form of carbon-di-oxide) the reason why Mann's planet is too cold is, it orbiting the gargantua(black hole) at an over elongated path, the planet swings close(inward journey) around the gargantua and flies out to a large distance(outward journey) and come close around and flies out again, In the movie when the crew desecend to land Endurance is at extreme end of the orbit (outward journey) and after docking scene endurance comes closer to the gargantua; it shows that the Mann's planet mostly away from the accretion disk of gargantua;                                                            oribtary of Mann's planet around gargantua  Mann's planet is cold and ...

  We all know that moon has no atmosphere but at near the pole hematite (Iron oxide-Rust) is found by chandrayan-1 2008 mission by ISRO (INDIAN SPACE RESEARCH ORGANISATION) Shows the data The blue colour show ice presents at the poles the red orange colour show that is hematite. Hematite   Hematite is a oxides of iron generally rust. Rust is formed only when iron is reacted to oxygen and presence of moisture in air or water which leads to corrode How hematite formed in Airless moon Scientist believe that reason for rust  is First Hydrogen ion in form of plasma from sun's solar wind act as a reducer in moons surface but when moon orbiting earth at point it crosses earth magnetotail in earth magnetism there may be possible for oxygen may expell from the atmosphere may have chance to react with moon surface it mostly oocur when earth and moon is completely face each other where earth blocks all the solar wind to moon at the time oxidation may happen Another reason  dust...

Ciphertext It a form of encoded text it also known as cryptographic text it is a form encrypting the text or sort of information intially  the set of text has been encoded for private communication How it's work  The information to encrypt are base information it is encoded using the largest prime number and it as been send to the receiver Inbetween hacker can receive the encrypted data but the can't able to decrypt the data only receiver have the key of the encrypted data Decryption is done by the receiver device

Why Worm gears are not reversible Worm gears are used in speed reducer  this drive has a worm(driving Shaft) and a worm wheel (driven wheel) The speed reduction ratio is about 300:3 rpm Why it is not reversible: Worm gear has more contact area than any other gears so it has more friction so it has been used as self locking mechanism. Due to this more friction worm gears are not reversible.

Bio-Mimetics -Bat SONAR system was inspired from bats. Bats use Echolocation to move and hunt it's prey by emitting a sound about the frequency of 9-200kHz humans have the range about 20-20kHz sometimes bats crips are able to listen by human. A boy designed a new SONAR based walking stick for blind people this  Sonar stick are able to find out object near the stick to  detect any presents

Why computer mouse have red LED light? A computer mouse is a optical mouse, which uses a light source, typically a light-emiting-diode, and a light detector, such as an array of photodiodes, to detect movement relative to a surface.Variations of the optiocal mouse have largely replaced the older mechanical mouse design, which uses moving parts to sense motion.But why red is mostly used, simple as red diodes are inexpensive and silicon photodetectors are very sensitive to red light.

What happen when we charge our Mobile phone over night what happen When we charge our phone over night before that we move  to the charger working, when the mobile phone is connected the A.C current of 240V step down to about 5V and later it converts into D.C current by rectifier and filtered and connect to the charging port Intially the phone get completed charged and the automatic turn off system cut-off the charging but after few minutes Mobile charge drain from 100% to 99% but it is still connected so the circuit will again closed and get charge the mobile phone to 100% and it will loop  It may affect your phone charger  and battery

Why Auto-rickshaw tyres are tilted  Many times we saw auto tyres are tilted slightly about 1-3° vertical it is called Camber  Camber is are three types 1.Positive Camber  2. Negative Camber 3.Neutral Camber When the auto-rickshaw is unloaded the tyres will look tilted when it is fully  loaded with passengers the tyre inclination will become straight. It also help to withstand heavy load during traction and avoid tyre wearing during running Negative Camber are used in off-road vehicle like tractor

Bio-Mimetic_Green coconut We use coconut trees and it's parts in many ways Apart from its uses  also inspires engineers about the designs of its coconut bottom. Bottom of the coconut is like a  parabolic curve. The curve like structure prevents the inner shell of the coconut when it falls down This  concept is used in aerated drinks making company this parabolic curve like structure which withstand pressure of  the areated drinks and also prevent the bottom during fall down Because parabolic shapes are spread the load evenly examples like 1.Rocket nose 2.Signal receiving Dish

Why glasses are transparent ? Glass is made up from Si & O ,it is commonly found from sand. Si & O are bonding together to form  a crystal ,when we melt it. Now why glasses are transparent. In Silicon di oxide ,electrons orbit are so far from one to another.So that it will allow photons through it.So light is not reflected and looks transparent. But why other solids are not transparent.If any solid object look like green color that is not a green color ,other colors are passes through it ,green color is reflected that's why we saw green color. The lights pass through that object but some photon rays are hits the electron to change orbit ,this effect  causes color reflection.But how the color are varient ,because it's depend on the structure of the electron orbit & speed of electron.The electron speed decides the reflection rate ,that decide wavelength.Finally wavelength decides color.We saw green color (approx) 560-520 nm wavelength. 

Car back glass lines Some cars having parallel lines in rear glass.What they are ,why it should be placed here? It is a defogger ,when rain droplets fall on the rear mirror used to evaporate the water on  the glass.Some car there is a switch on the dashboard to on the rear defogger.When rains  you just start the switch and that will switch off automatically ,when it do it's work.  

Can you control your dream Everyone will to control their dreams ,by naturally some people control their dreaming. That term is called lucid dreaming.A lucid dream is a dream during which the dreamer is aware of dreaming. A lucid also starts like normal dream ,when you aware you are in dream and that world is not real. Then you will control your dream. About half of the population has experienced lucid dreaming at least ones in their life time. Their is no reason to be lucid dream comes which person.But some studies shows that people who are reflective or more introspective about their inner thoughts are more prone to lucid dream than others.    

One table spoon neutron star weight Recently One massive density neutron star is found by our scientists. This is the more density star ever found by humans.This star is approximately  weights one billion suns.Imagine if you take one table spoon matters in this  neutron star ,it will weights 100 tons in planet earth.  

Does your body will replaced every _____ years? Human body will replaced every seven to fifteen years. But not all cells (like tooth , cells on the inner lens of eye) are replaced.It will stay with you ever. Stomach and intestines will replaced just 5 days.You get a hole new skin for instance every two to four weeks.Skeletal cells die and new one grow constantly,but the process takes upto 10 years. It takes upto 5 months for a nail to grow/replace from bottom to top. After seeing this; Wife:I'm not that girl ,hugs my ex Husband:😈