Post #142 Finland
Finland has got around 1,87,888 lakes. No other country has got so many lakes. Therefore it is called 'The land of a thousand lakes'. It has also got 1,78,000 islands. Finland became independent nation in 1917.
places, lakes, islands
Post #137 Holograms
Holograms are 3 dimensional images of objects produced from laser. They represent the height, width & depth of an object. The first hologram was produced in 1948.
light, laser, hologram
Post #148 Stars Count
There're more stars in the universe than grains of sand on earth.
stars, sand, count
Post #130 Night vision
All objects give off 'heat' energy which is not visible to human eye. Night vision goggles are designed to collect those tiny bits of heat energy & are enhanced. This makes it possible to see through those goggles. This is called Image Enhancement Technology.
Night, vision, infrared, heat energy
Post #122 Magic Flames
Will o' the wisp (or Magic Flames) refers to the flame often seen moving by itself over marshy areas. This happens as the rotten plants in marshy areas produce a gas called methane, while the remains of rotting animals produce a gas called phosphine. When phosphine meets air, it causes a spark, and this spark ignites the methane, creating a naturally occurring flame.
Post #139 Trinidad & Tobago
Trinidad & Tobago ( country of 2 islands near South America) is also known as 'Land of Hummingbirds'. The island consists of 17 species of humming birds including many rare species. Images of the bird also appear on the country's currency, passport & coats of arms.
humming bird, places, island
Post #144 Antartica
Desserts are places that recieves very little annual rainfall. Therefore, a dessert can be a hot place or a cold place. Antartica is covered with ice and receives no rain. Therefore, Antartica is a cold desert and if often called 'Largest cold Desert'.
Post #138 Electrochromatic glass
An electrochromatic glass is covered by a thin coating of a special material which can turn blue by passing electricity through it. It is used in rear view mirrors to reduce headlight glare at night. It is also used in windows to control the amount of light let into a room.
Post #127 Compound eyes
Compound eyes are different from human eyes. In compound eyes there are many lenses. It is present in many animals & insects. The views from different lenses are combined to form a single image. The lenses can't change focus, so insects can't see things far away, but are very good at seeing things nearby. This is why it is so difficult to hit a fly.
Post #146 William Shakespeare
William Shakespeare, the greatest poet of all time, was born in Stratford (England) near a river named Avon. He is therefore know as 'Bard of Avon'. The word 'Bard' means poet. He wrote 38 plays, 154 sonnets (poem of 14 lines), two long narrative poems & a few verses.
poet, bard, england
Post #133 Fibre optic cables
Fibre optic cables are bundles of glass threads that have been coated in two layers of reflective plastic. Light travels through glass strands by reflection because of a phenomenon know as Total Internal Reflection. They are used to for fast data communication & are used to provide very fast internet access.
Light, speed, optics
Post #126 Rods & cones
Rods & cones are special cells that are present in the eye. Rods are highly sensitive cells located in the outer area of the retina. They help in seeing in the dark. Cones are located in central areas of retina. They help in seeing colors.
Post #145 Abraham Lincoln
Abraham Lincoln was the 16th president of the USA. He was known as 'Honest Abe' because of his honesty & integrity. He never lied while addressing the nation. This is why he remains a hero all around the world. He was assassinated in April 1865.
president, people, hero
Post #123 Rainbow
The white light is made up of 7 colors. During rain, white light passes through water droplets present in the sky. This causes refraction (bending of light) & all the colors of white light get seperated, forming a rainbow.
Post #121 Leaning Tower of Pisa
The Leaning Tower of Pisa (Italy) took 344 years to build, beginning in August 1173. It began to lean in 1178 once construction began on the second floor. The lean was due to one side sinking into the soft ground.
Post #120 Bugatti Service
The service cost for 'Bugatti Veyron' (one of the world's fastest car) is $21,000 (US dollars) or Rs/-13,00,000 (Indian Rupees). This does not include the cost to replace any parts.
cars, cost, rich
Post #119 Statue Of Liberty
The 'Statue of Liberty' (New York) was revealed on 28 October,1886. It was a gift from France to the US & a symbol of freedom. The statue was originally brown in color as it is made up of copper. It gradually turned green by 1920. This change happened due to weathering.
statue, freedom, places, monuments
Post #118 Phishing Attack
Phishing is a type of online scam in which the user is cheated by showing a copy of a website. When the user enters his personal details, it goes to the hacker instead of going to the website. Phishing can be identified by looking at the URL (URL would look weird). They are usually spread by emails & messages. It is the most easiest scam & just requires a few minutes for setup.
Post #109 Kathmandu
Kathmandu (Nepal) is situated in Himalayas. It is home to more than half of Nepal's population. The Pashupatinath temple was left with only a few cracks after the 2015 earthquake while other monument's & structures were destroyed.
Post #114 Loyal dog
Greyfriars Bobby, an Edinburgh dog, guarded his owner's grave for 14 years, during the 19th century. He got "Freedom of the City" award in Britain.
Post #110 Sri Lanka
Sri lanka was earlier known as Ceylon. The island was known for its spices (especially cinnamon). It was also a sea port for trade between Asia & west. Sri Lanka gained independence in 1948.
Places, old names
Post #116 1-9-17 Asteroid
On Sept 1, 2017, an asteroid named "Florence" , 4.4 km in size will fly past earth at a distance of 7 million kms. It is going to fly safe & cause no harm to earth. It was 127 years back that Florence passed this close to earth & not happening again until 2500.
Asteroids, happening, earth
Post #117 Asteroid
Asteriods are small rocks orbiting the Sun. An asteroid larger than 1 km could cause a planet-wide damage. In 2013, a meteor just 20 m in diameter, weighing 10,000 tonnes hit the Earth's atmosphere & caused widespread damage & injuries in Russia.
Post #113 Dubai
Dubai (UAE) is one of the most popular city in the world. It hosts the world 's tallest building, has ATM' s dispensing gold bars. It is also one of the safest cities on earth, with crime rate being minimal due to strict laws.
Post #115 00000000
The U.S. nuclear missiles launch code was "00000000" (eight 0's) for nearly 20 years.