Have you Learnt the Algebraic Symbols?

 

Symbol
Symbol Name
Meaning / definition
Example

x
x variable
unknown value to find
when 2x = 4, then x = 2


equivalence
identical to
 


equal by definition
equal by definition
 

:=
equal by definition
equal by definition
 

~
approximately equal
weak approximation
11 ~ 10


approximately equal
approximation
sin(0.01) ≈ 0.01


proportional to
proportional to
y ∝ x when y = kx, k constant


lemniscate
infinity symbol
 


much less than
much less than
1 ≪ 1000000


much greater than
much greater than
1000000 ≫ 1

( )
parentheses
calculate expression inside first
2 * (3+5) = 16

brackets
calculate expression inside […]

Empowering Teens to Embrace Science and Technology

So many School Children do not seem to understand the huge emphasis placed on Science Subjects. Some do not even understand the relevance of Mathematics and such related abstract subjects including Physics which they are forced to learn and understand. Yet, the truth remains that virtually all the advancements humanity has made here […]

Science: Forces of Gravity and Aerodynamics

What is Gravity?

Gravity is a downward vertical force that keeps an object on the earth, or pulls it towards the surface of the earth. It is responsible for the weight that objects have, for the suspension of earth in space, its rotation round the sun, and also for the rotation of […]

If Gravity Were Switched Off, This is What Will Happen to the Earth and Our Universe

We have all experienced the force of gravity. It is what happens to you when you jump up into the air, and fall right back down to the ground. But have you ever wondered: What if there was no gravity? What exactly would life on earth be like?

Jay Buckey, a physician and […]

Why You Must Remove Earrings, Other Metallic Objects Before an X Ray Exam

Ever been to a radiologist for an exam, and told you would have to remove all metallic substances from your person? If you watch the Medical TV series, House, you would have come across the episode where a man felt he was being pulled apart after he was placed in an MRI machine. […]

If One Screams High Enough, Will One Really Shatter Glass? Science Explains It All

Have you ever heard someone say about a particular singer “She’s got a voice that can break glass”? Or that if you scream in a high-pitched voice long enough in front of a mirror, it will crack?

According an explanation by BBC […]

NIKOLA TESLA: The Man Whose Inventions Power Our Machines and Light Up the World

The next time darkness is swallowed by light as you put on your electric bulb, plug your power-hungry smartphone to an electric source, or take a cold drink from your refrigerator; you should have in mind to thank the man who made those processes possible. Care to know his name?

Please, Meet Nikola Tesla

How To Protect Yourself on the Internet

Have you ever shared your password with anyone? Then you should read this, since that will make you one of the 31% of the population who has shared a password — either for something as harmless as downloading music or video on a media sharing site, or as sensitive as an ATM card’s […]

3 Simple Steps To Protecting Your Pictures From Hackers

Did you hear of the girl whose identity was stolen when her Facebook picture was used by another girl – under a fake name – to start an online romantic relationship with an American football star? The story doesn’t end here. The identity thief went on to end her online relationship with this […]

These are the 8 Effects of Space Life on the Human Body

Because our bodies have been adapted to life on Earth, they are not built for weightlessness — which is exactly why NASA plans to use Scott Kelly, who has just returned from his nearly one yearstay aboard the International Space Station to study the long-term effects of spaceflight on the human body.