Before Mosquitoes pierce our skin to take blood, they often fly buzzing around our ears. Do you know why?
When you are taking a step while walking you are using up to 200 muscles.
An astronaut can be up to 2 inches (5 centimeters) taller when returning from space.
Their cartilage disks in the spinal cord expand in the absence of gravity.
Normal glass has a little bit of iron oxide in it, and this iron adds the greenish tint to the glass. Iron oxide inside 6 inches or more of glass is needed to give the greenish tint. We only see this in the edge because, when we look through the glass edge, we are looking through inches of glass.
If you look at a piece of colourless glass from an angle, why does it have a greenish tint?
Minus 40 degrees Celsius is exactly the same temperature as minus 40 degrees Fahrenheit.
Olympic gold medals contain more silver than gold. ( about 92.5% of mass )
The surface area of the human brain is about 1,500 to 2,000 square centimeters, which is nearly the area of two pages of a newspaper.
Dynamo and the lamp actually need two wires to connect each other. One wire connects them directly and we use the bicycle frame to replace the other wire. As the frame is metallic, it carries the current and completes the circuit.
Normally we need at least two connecting wires to complete an electronic circuit. But mostly,the bicycle dynamo needs only one wire to light up the bicycle lamp.How does it work?
Human brain produces 100,000 chemical reactions per second.
Research shows mothers are the most quizzed people in the UK.(Nearly 300 questions asked from them per day)
And the study discovered girls aged four are the most curious, asking an incredible 390 questions per day.
A dragonfly can eat food equal to its own weight in about 30 minutes. We don’t eat that amount of food in a week!
Since haemoglobin is our respiratory pigment, blood is red.We see veins in blue colour due an effect of light. Some colours of the white light cannot penetrate through our skin as their frequencies are shorter. But colours with large frequencies such as Blue can penetrate through our skin .Blue light reaches veins and reflects back across the skin. This blue light hits the veins and reflects back.This reflected light gives us an impression that veins are blue in colour. So, your veins may look blue, but remember when it bleeds it is red even though veins appear in blue.
Why do we see Veins under the skin in Blue colour,when seen externally?
The gravity at the surface of Sun is 28 times that of Earth.
A man weighing 60 kg in the Earth will weigh 1680 kg on the Sun.
When a person dies, the first sense lost is sight, and the last is hearing.
Fingernails at a rate of about 3 millimeters per month, toenails grow at a rate of about 1 millimeter every month.
Finger nails are located closer to the heart than toe nails.Therefore finger nails receive a better blood circulation along with oxygen and nutrients. This helps them to grow faster than toe nails.