Top 5 facts about science. Did you know???
1.Do you know that a laser can easily be trapped in water
Yes, my friend, you heard it right. A cool thing called total internal reflection is applied when pointing a laser beam through a water container, as the refraction of water is much higher than air. When light travels through water, it’s slowed by the heavier particles in water; thus, the laser beam effectively gets “trapped” in the water. This is probably the first you get to know this !!
2. Humans can dissolve sharp razor blades
Well, well, On the rare occasion that you swallow a razor blade, don’t fret. Our human body is more capable than you think. Acids are ranked on a scale from 0 to 14; the lower the pH level, the stronger the acid. Human stomach acid is typically 1.0 to 2.0, meaning that it has an impeccably strong pH. In a study, scientists found that the “thickened back of a single-edged blade” dissolved after two hours of immersion in stomach acid.
3.Clouds in the sky can weigh more than a million pounds(400000kg+)
The childhood dreams of floating on a weightless cloud may get rained on with this fact: the average cumulus cloud can weigh up to a million pounds. A million pounds! That’s about as heavy as the world’s largest passenger jet. According to the research, an average cumulus cloud weighs an incredible 500,000 kg (or 1.1 million pounds!) - the equivalent weight of 100+ elephants - a lot more than you think, right! Clouds may look so light and fluffy, but the fact is that they are actually quite heavy.
4.Hot water freezes faster than cold water
In general, it seems counterintuitive, but it’s called the Mpemba effect; after a Tanzanian student named Erasto Mpemba told his teacher that a hot mixture of ice cream froze faster than a cold one. Scientists now believe this is because the velocities of water particles have a specific disposition while they’re hot that allows them to freeze more readily. If proven correct, this finding could also have implications in daily life, like cooling electric vehicles and stuffs like that.
5. A Human DNA in an average person’s body stretch from the sun to Pluto and back 17 times
The human body genome (the genetic code in each human cell) contains 23 DNA molecules (called chromosomes), each containing 500,000 to 2.5 million nucleotide pairs. DNA molecules of this size are 1.7 to 8.5 cm long when uncoiled — about 5 cm on average. There are about 37 trillion cells in the human body, so if you were to uncoil all of the DNA encased in each cell and place the end of the molecule to end, it would sum to a total length of 2×1014 meters enough for 17 Pluto round trips (the distance from the sun to Pluto and then back again is 1.2×1013 meters). As a bonus, you should know that we each share 99% of our DNA with every other human — to show that we’re far more alike than different.
WELL, THANK YOU ALL !!!
KEEP STUDYING, KEEP GROWING KNOWLEDGEABLE !!!
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