DID YOU KNOW?
1. If the Earth just applies a little brake, Everything on Earth would be flung into space.
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| Speeding Earth |
I believe you've felt a thrust from a braking car several times and in some cases, you almost got flung out of your seat. This happened to you for a car moving at a speed of maybe around 33.33m/s (120km/hr) ; Compare it to the velocity of our planet that revolves round the sun at an incredible speed of about 30,000 meters per second. Slowing down would be a disaster.
Anyway, don't worry to put on your earth belts now, there is no traffic in space.
2. Its easier to pull than to push.
All of us must have experienced this somehow. You notice that you find it easier to pull a heavy object than to push it. This is simply because, while pulling, your body weight is added to the work force.
When you are bent like the dummy in the pic, you tend to fall away from the object you are pulling. This will result in the object moving along with you (i.e. if the resultant force is enough)
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| Pulling an Object (Source: www.sharecg.com, 2013) |
3. Water, when excited by sound waves produces light flashes and nobody knows exactly why.
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| Sonoluminescence (Source: www.eglobaltravelmedia.com.au, 2013) |
Yeah that's right - You can actually turn sound into light by exciting water waves. This is known as Sono (Sound) Luminescence(Light). Some animals like the sea Mantis can do this in water by snapping. The problem now is that, this is beyond the limits of fluid mechanics.
Watch the video here if you are using a PC.
Watch the video here if you are using a PC.
4. A year in Mercury is 88 days on earth.
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| The Solar System (Source: www.eso.org) |
This shouldn't be a surprise if you have an idea of the distance of Planet Mercury from the sun. It's closeness to the sun, makes it very hot to live over there but also rewards it with an orbit which has a smaller circumference. Hence, it gets to complete more than 4 revolutions round the sun before earth clocks one.
5. The biggest research facility on earth is the Large Hadron Collider and it was built just to discover a very very very tinny particle called Higgs Boson and it has been discovered.
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| The Large Hadron Collider Landscape |
6. Our whole galaxy (i.e. Our sun and 9 planets) is like a spot in the milky way and also revolves.
How big do you think the earth is? or maybe the whole solar system? The truth is that we are relatively like a spot when compared to the size of the milky way. In fact, if you compress our sun to the size of a cell, and also compress the milky way in the same ratio; the milky way would be the size of North America.
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| The Milky Way and Our Solar System (Source: thedarkcosmos.com, 2013) |
7. Einstein had a bad recommendation letter by his lecturer for not attending his classes; that's why he couldn't get a good job.
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| Mr. Einstein at Work |
He had to work as a Clerk at the Swiss Patents, Authority. That's how he gets to analysis different ideas coming to his table everyday. A disappointment, later became a blessing for him.
8. A Diamond glows by reflecting a single light ray thousands of time inside it before the light can find its way out. (See Total internal reflection)
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| Different Cuts and Glow (Source: www.enterprisemission.com, 2013) |
The angle of the surface of a diamond plays a great role in keeping the light ray in. Each surface keeps reflecting the light due to total internal refection until the light finally escapes through a 'bad' surface. This implies that how powerful a diamond glows is dependent on the diamond cutter.
9. A teaspoon of water from Atlantic ocean contains many more atoms than Atlantic ocean contains teaspoons of water.
Doubting? lets do the maths together and compare.
Number of Teaspoons in the Atlantic Ocean,
Number of Teaspoons in the Atlantic Ocean,
Volume of the Atlantic ocean, Va = 3.104109
× 1017 m3
1 teaspoon of water, Vt = 5 x 10-6 m3
vol. of teaspoons of water in Atlantic ocean = Va/Vt
No. of teaspoon of water in Atlantic ocean = 6.208 x 1022
Now For the numbers of atoms in a teaspoon of water,
Molecular mass of water, M = 18.02 g/mol
Density of sea water, ρ = 1.02 g/cm
Converting Molecular mass to Molar Volume,
*Convert molar volume to SI Unit,
17.67cm3/mol = 17.67 (10-2)3 m3/mol
= 17.67 x 10-6 m3/mol
Note: centi- = 10-2
Number of moles in a teaspoon = Vt/Mv
= 0.283 Moles
1 mole = 6.022 x 1023 atoms
Number of atoms in a teaspoon = 0.283 x 6.022 x 1023
= 1.7040 x 1023
OR = 17.040 x 1022 atoms
Now compare the figures in RED.
1 teaspoon of water, Vt = 5 x 10-6 m3
vol. of teaspoons of water in Atlantic ocean = Va/Vt
No. of teaspoon of water in Atlantic ocean = 6.208 x 1022
Now For the numbers of atoms in a teaspoon of water,
Molecular mass of water, M = 18.02 g/mol
Density of sea water, ρ = 1.02 g/cm
Converting Molecular mass to Molar Volume,
*Convert molar volume to SI Unit,
17.67cm3/mol = 17.67 (10-2)3 m3/mol
= 17.67 x 10-6 m3/mol
Note: centi- = 10-2
Number of moles in a teaspoon = Vt/Mv
= 0.283 Moles
1 mole = 6.022 x 1023 atoms
Number of atoms in a teaspoon = 0.283 x 6.022 x 1023
= 1.7040 x 1023
OR = 17.040 x 1022 atoms
Now compare the figures in RED.
10. An atom is more than 99.99% empty.
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| Electron Cloud Model of the atom (Source: sdsu-physics.org, 2013. Not to be scaled) |
Yes! that's correct. This is actually because the electron cloud spreads out so wide and covers a large radius but only the electron occupies it. And as we know, the mass and size of the electron is like 1/1836 of the proton's.
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More References For Fact No.9
1. Before developing it, I first saw this fact at Unbelievable Facts Page on Facebook.
2. The Volume of The Atlantic ocean was gotten from the National Geophysical Data Center's Webpage.
3. Volume of a teaspoon of water, from GORILLAplus.
4. Other pages that helped me includes ASK.com, This PDF handout and of course Google.
Thank you all so much.
1. Before developing it, I first saw this fact at Unbelievable Facts Page on Facebook.
2. The Volume of The Atlantic ocean was gotten from the National Geophysical Data Center's Webpage.
3. Volume of a teaspoon of water, from GORILLAplus.
4. Other pages that helped me includes ASK.com, This PDF handout and of course Google.
Thank you all so much.
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