Monthly Archives: August 2015

Where are the Dinosaur Fossils found ?

All over the World

  • Dinosaurs lived all over the world.
  • To find their fossils you must look for areas of exposed sedimentary rock.
  • Explore mountains, canyons, riverbanks, deserts, or eroded hillsides.
  • Most dinosaur fossils are found in arid regions where there is little ground cover and where the fossiliferous rock layers are most likely to be exposed.

Dinosaurs Around the World

Tyrannosaurus Rex

Dinosaurs of the World

Most Fossils Sites Map

Dino Fossil

Who invented the Refrigerator ?

William Cullen 

  • It was in 18th century that the process of invention of refrigerator started. In 1748 William Cullen (1710-1790) was a Scottish physician, chemist and professor of University of Glasgow who developed a process for creating an artificial cooling medium. No one took interest in it for commercial or home consumption, it only attracted scientific attention.
  • An American inventor Oliver Evans (1755-1819) made the first design for the refrigerator in 1804 but until 1834 none was interested in the same. Jacob Perkins built the first refrigeration machine in 1834.


William Cullen 1710-1790          Oliver Evans 1755-1819

Refrigerator History

Ice SafesFirst Refrigerator

Fridge change over years

How Many Times does your Heart Beat in a Day ?

Over 100,000 beats per day

A rate of 72 to 80 beats per minute is generally considered normal for a healthy human being at rest. If your heart beats at 80 times a minute : 4,800 times per hour115,200 times per day. 42,048,000 times per year3,363,840,000 times if you have 80 years old !

Heart Beat Pulse Rate

Medicine healthcare human hand measuring arm pulse isolated on white background

Medicine healthcare human hand measuring arm pulse isolated on white background

What is the Longest Canal in the World ?

Beijing-Hangzhou Grand Canal of China

  • The Beijing-Hangzhou Grand Canal is the oldest and longest man-made canal in the world and a famous tourist destination.
  • The Grand Canal is 1,115 miles long (1,794 kilometers) with a history of over 2,500 years, and it starts at Beijing in the north and ends at Hangzhou in the south.
  • The Beijing-Hangzhou Grand Canal links five great rivers, the Hai River, the Huai River, the Yangtze River, the Yellow River and the Qiantang River.
  • The Grand Canal was built in 468 BC, and it went through renovations and enlargements three times in history, which were in the Spring and Autumn Period (770 BC-476 BC), the Sui Dynasty (581-618) and the Yuan Dynasty (1271-1368) respectively.


Beijing-Hangzhou Grand Canal Map and History

Grand Canal of China

Beijing-Hangzhou Grand Canal, China

Beijing-Hangzhou Grand Canal of China

Are Bananas Radioactive ?


  • Bananas are slightly radioactive because they contain potassium-40 and potassium decays. Potassium is a necessary substance for healthy operation of your body.
  • Bananas are really a source of small radiation, but they are safe : you’ll have to eat approximately 5 million bananas to get radiation sickness.

Bananas are slightly Radioative

Banana Equivalent Dose

Bananas Radioactive

Banana Radiactive Chart

What is Uluru Ayers Rock made of ?


  • Uluru is a huge chunk of rock, known as a monolith, set the middle of Australia.
  • Uluru rock is composed of arkose, a coarse grained sandstone rich in the mineral feldspar. The sandy sediment, which hardened to form this arkose, was eroded from high mountains composed largely of granite.
  • The 300 million-year-old rock is comprised of sand, feldspar (various crystalline minerals) and rock, and originally hailed from a sea floor. A large chunk is above ground today (348m), and the flat top and grooved sides are a result of weathering. Uluru was discovered by William Gosse in the 1800s, who named it after the Chief Secretary to South Australia, Henry Ayers.
  • Uluru is the Aboriginal and official name. Ayers Rock is the most commonly used name, especially outside Australia.


  • The intriguing sculpted shapes, valleys and ridges, caves, potholes and plunge pools are the result of the last few hundreds of millions of years of erosion. The flaky surface is due to chemical decomposition.

Uluru description

Uluru - How Big is Uluru

Uluru Ayers Rock, Australia

Uluru Ayers Map