Flying windmills!

“Energy”, don’t know how many times we use this word, but we surely use energy everyday. By now, we know what renewable energy sources are( if not go ahead and click here Renewable).

One of the most effective renewable sources of energy is wind energy, till now we have seen only the windmills on the ground producing energy. But, here are the new ones that are situated above the ground so called “Flying Windmills”.

So, what is the reason to put the windmills above the ground? Well… Higher altitudes offer upto five times stronger winds that are also consistent.

This thing flies with the help of helium filled shell. The airborne wind turbine will be held steady by making use of strong tethers which will also transfer the electricity generated to ground. And Flying windmills are actually tested!

Ben Glass, is the one who came with this idea. Learn more about these flying windmills from the video below.

And please do visit


Gravitylight ( Glowing bulbs using gravity)

Electricity is very essential and the resources to produce electricity are limited. Also, most of the energy resources we use to create energy are non-renewable and harmful for the environment.

In such scenario, creating energy through gravity is extremely useful and innovative. A weighted bag is hung and winched (a pulling device, which pulls)  up. With this the weighed bag descends down gradually.

It uses this weight to drive a gear-train and generate electricity from the kinetic energy created, sufficient to light up an LED bulb.


This really helps people in rural areas with lack of electricity to light up their houses using nothing but “Gravity”. This is more efficient than solar energy.

Learn more about such clean energy here Renewable Piezoelectricity

To learn more about this Gravity-light, checkout the video below. 

Electricity by applying pressure (PEIZOELECTRICITY)

We extensively use electrical energy, probably we can’t live without it in this modern age. So, where do we get electrical energy from? Well, we got two ways Renewable energy sources( which are unlimited like solar energy), Non renewable energy sources( which are limited). Now the “Piezoelectricity” is something like Renewable energy.

What is Piezoelectricity?

There are certain materials called Piezoelectric material, which on applying mechanical stress produce electricity. Precisely apply pressure, boom you got electric energy.

How it manages to give Electric energy?

The animation down below explains everything.

Animation showing how piezoelectric charges appear when you press a crystal.

Animation source

Let us start analysing what our little animation is trying to explain. The Piezoelectric material is composed of equal number of electrons and protons so, the charges cancel out giving no net zero charge. As we apply pressure on this type of materials, the charges get out of balance and they end up giving some voltage at it ends.

This looks very simple yet very useful if used in a more specific and productive areas. And you can surely try this at home. Here’s the picture of piezo electric material (small one), go ahead connect it to an LED and start applying pressure on it and see what happens…


We can also make our own piezo electric material at home… Let me tell you how. Take Baking soda ( Sodium carbonate), Cream of tartar (Potassium Bitartrate). Mix 7:1 Cream of tartar to Water in a cup you should get a white solution, now put the cup in a pan with water and heat until it’s just simmering, now add half tea spoon of baking soda, it get bubbling keep stirring and adding baking soda until the solution becomes clear( transparent). Leave it overnight in a cool place. After an overnight stand you will get some crystals, something like this..


Try connecting these crystals ends to a multi meter, apply pressure to the crystal and test for some voltage…

so, let me know what do you think…