The 9 Oldest Person In the World

What’s the age of the world’s oldest living person? Any guesses? Before I give you the answer, let’s look at the average life expectancy of humans from the beginning of the 19th century to the 21st century. In early 19th century...

What Color Is The Sun? A Simple Explanation

Although the Sun appears yellow or orange, it is actually brilliant white.  Because of the Earth’s atmosphere, Sun looks yellow and changes colors at sunrise and sunset.  The actual color of the Sun can be viewed from space because there are...

15 Best Examples Of Potential Energy

The term ‘Potential Energy’ was coined by a Scottish mechanical engineer William Rankine in the 19tn century. It soon became one of the most influential variables in the formulas the describe our known universe. What Is Potential Energy...

What Is String Theory? A Simple Overview

String theory says that indivisible subatomic particles are made of tiny little strings vibrating in a specific pattern.  Each vibrational pattern corresponds to a different particle. Electron is nothing but a string vibrating in one pattern, and a...

What Is WiFi Calling? How Does It Work?

WiFi calling is a service that allows users to make and receive calls over a WiFi network using their existing phone numbers. It is very simple to use, and it doesn’t require any separate application or log-in. Making a WiFi-call on a...

What is Fracking? Pros And Cons

Fracking, short for hydraulic fracturing, is a specific drilling technique that allows miners to extract oil and natural gas from rocks buried deep below the surface. In other words, it facilitates the recovery of hard-to-reach natural resources...

Engineers Develop Ultra-Low Power WiFi Radios

The new ultra-low WiFi radio consumes only 28 microwatts to transmit data at 2 megabits per second over a range of 21 meters. It could enable batteryless smart devices and completely wireless home setups.  Despite the continuously growing popularity...

Is Water Polar Or Nonpolar?

Water is a polar molecule because it has an unequal sharing of electrons.  A water molecule has one oxygen (negative charge) and two hydrogen atoms (positive charge).  The difference between the atoms’ electronegativity and their spatial...