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 How to calculate age of  tree using ring without cutting The rings in the trees are used to calculating the age of the trees and tells what the weather was like during each year of the tree’s life. The light-colored rings represent wood that grew in the spring and early summer, while the dark rings represent wood that grew in the late summer and fall. One light ring plus one dark ring equals one year of the tree’s life. The color and width of tree rings can provide snapshots of past climate conditions. For example, tree rings usually grow wider in warm, wet years and they are thinner in years when it is cold and dry. If the tree has experienced stressful conditions, such as a drought, the tree might hardly grow at all in those years Calculating the age of the tree without cutting The age of the tree can be calculated without cutting the tree with the help of an instrument called Increment borer this instrument is bored into the tree up to the centre and ...

What makes the Hammer strong Usually Hammers are made of steel but the same steel is used every where but in hammer the strength is more. The reason is hammer is made by the process called drop forging process In this process a heated steel billet is placed on a lower die mould block, while an overhead, die-equipped ram hammer drives or “drops” down, forcing the metal to fill the contours of the two die blocks. Forging on a drop hammer is carried out in a succession of die impressions using repeated blows. Which results in good grain flow of material and good strength is obtained with less wastage of material.

Health benefits of Tryptophan Amino acid Tryptophan Amino acid is  majorly found in meat, fish and rich protein content foods this  amino acid has health benefits like   1.Promoting healthier and better quality sleep 2.Relief from depression and anxiety 3.Increased emotional well-being 4.Managing pain tolerance The body uses tryptophan to help make niacin, melatonin, and serotonin. Serotonin is thought to produce healthy sleep and a stable mood.

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. 

Fruit stickers really mean? What does the number on fruit stickers really mean? Five number code beginning with '9' -Originally grown. Five number code with beginning with '8' -Gentically modified. Four number code -Typically grown with pesticides. The sticker is called PLU code. PLU-Price lookup code.

Why phones are made vertically? Computers,laptops,Theaters and everything which can display something to us is in landscape but why mobile phones are made vertically.Everything behind the design,is having some science.There is no science,that is not succeed.In the beginning of the telephone invention,people want to speak and hear.So the telephone is made vertically and approximately ear and mouth height.Then lesser the length,when mobile was invented.Not only the reason hear and speak,cell phones are want to take outside so the design wants a small size and also put in our pockets.So that cell phones and smart phones are made vertically.Another reason for vertical screen is,people are set by something they never change.Telephones are in vertical then designer does vertical cellphones,now smartphones are made vertically.You see great example of this theater and computer are still made in landscape.Three reasons Tradition,People set by their view and science.As per human eye sight vi...

Worlds first Television channel WRGB was started as the worlds first television station.It broadcast from the General electric facility in schenectady,New york.It was popularly known as WGY Television.It is started on January 13,1928.It broadcast from the general electric facility in Schenectady under the call letters W2XB.

World's first touchscreen phone The IBM SIMON was the world's first touchscreen phone in 1992.And also referred this was the worlds first smart phone.Some touch mobiles came out in early 90s but most mobile devices with touchscreen were more like PDAs.Fingerworks produced a line of multi touch products in 1998,including the igesture and touchstream keyboard.The company was acquired by apple in 2005.

Most stolen Book Most stolen books in the world is “The Guinness book of world records” and Bible will take second position in this list.According to recent research Guinness world record book and Bible are mostly stolen from library. Rowling’s Harry potter books and abbie hoffman’s steal this book are also ranked high in most stolen books lost. Someone:oh..no ,i meant the books name wrongly.(Steal this book).

The origins of marriage From the best available evidence 4350 before it is starts.For thousands of years before that ,anthropologists believe families consisted of loosely group of as many ad 30 people,with several male leaders ,multiple women shared by them ,and children.The first recorded evidence of marriage ceremonies uniting one men and women dates from about 2350 B.C., in mesopatamia.

World's first car This is the world's first car  named motorwagan.Officially this is the first car of internal combustion engine.on planet earth the brand is owned by Benz.It is build in 1885 .It is build in mannheim ,Germany. Before 1885 benz make patent for their engine in 1879 ,which has been created in 1878.

World's most viewed picture This is world's most viewed picture.This picture is from Windows XP -Bliss. He is the photographer of worlds most viewed picture bliss.He is a nat geo photographer charles O rear.

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.  

Truth about money Everybody things more money becomes more wealthy,that's wrong at all. If any country have more currency ,their economical currency value decreases. Any country want more money to manage their resources ,what they will do to  manage their economical standby.They will got approval from parental bank  and print more currency.Suppose every country will print more currency to their  wealthy ,their is a confusion occurs and currencies will demonetize.As well as  the same situation in this case.Any country print more money ,than their currency will demonetized.So that economical growth is also decreases.     

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.    

You tube  You tube is one of the influencing social meadia ,it will increase the revenue day by day. 10,254 videos makes 1 billion in you tube.The average mobile view duration is 46 minutes, it will increases daily.Female users are 38% ,male is 62%.9% of small business in U.S is you tube. 350 hours of video uploaded every hour.Average 5.2 billion videos watched daily.You tube gets 40 million daily visitors.The total number of hours of video watched on youtube each month-3.25 billion.  

Paper folded after 100th time What you will fold a ordinary paper sheet with a thickness of 0.1 mm. You will fold a paper in half each time,what happens? 1 folds as thick as human hair 3 folds as pencil lead thickness 14 folds as tall as average human height (1.67 meter) 23 folds taller than the burj khalifa 27 folds,what you will think is more than 3 kms. No it is 14 kms thick more than mount everest. 37 folds is more than earth's thickness (14,000 kms) 45 folds is thickness between earth and moon  66 folds is thicknessssssssss of 1 light year. 68 folds is thickness of distance between sun to proxima centauri  76 folds is 1000 light year thickness 103 folds is thicknesssssssssssssssssss of observable universe  

Light speed is possible Yeah ,light speed is possible but want for an enormous amount of energy.Okay ,how much energy? It's approximately equal to the Big Bang's energy.You must know about one truth,but this one is scientists theory and no one in this universe is not able to prove practically.Because of our life span is very less compared to universe and suppose you want to proof that you must create very powerful engine.This engine having equal amount of big bang's energy.And start the engine ,You set origin (0,0) from your location and you will set your engine balance your origin point.After starting your engine the earth will move more than 3 lakh kilometers and also whole galaxy in just one second.But you will not submit your results to earth ,it goes continuously more than light speed.Yeah we are travel more than light speed and we are the example of achieve light speed.When Big Bang happens it releases enormous amount of energy ,this energy expands our entire mat...

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.  

Can electric bulbs blinks? All bulbs blink when powered by AC current.A bulb blinks twice the time of hertz supplied by AC power system.For one hertz a light comes and go twice,So 50 HZ AC current will blinks a light 100 times.For 60 HZ 120 times light blinks.This process is so fast ,so human eyes can't see this.