physics

Are shadows completely dark? Are there some shadows that are darker than others? What do a mobile phone camera and the human eye have in common? Are there any natural pin-hole cameras? How many mirrors do we need to see our right hand appear as it would to others? In this article, the author explores many simple ways in which the teaching of light can link everyday observations to concepts using shadows and reflections.
 
Introduction 
The phenomenon of colour is explained fragmentarily in chemistry, biology and physics in schools. In this article, a case is made for teaching colour as a separate interdisciplinary unit in the middle school.
 

Deepak Ahirwar

 

Background

In early April this year, newspapers and online websites were agog with the news that astronomers had obtained the first image of a black hole known to reside in a distant galaxy called M87. Why did this image cause such a stir?

How do we know the distance of the sun from the earth? Or that of the nearest galaxy to our own? This article introduces four methods that astronomers use to measure distances in space.

Life develops and evolves through several complex cellular interactions. These interactions are supported by a matrix in the cellular microenvironment. How is this matrix put together? How do cells bind and respond to it? Does it influence cell function in disease?

What is the Higgs boson? Why is the world of science so excited by its discovery? What are its properties? What impact has this discovery had on theoretical physics?

This is a Boomerang Paper Plane - yes it comes back to you.

Ater making this you can make a real paper based boomerang too.

This interactive lesson plan will help learners understand Newton's laws of motion. Teachers can derive their own lesson plan ideas also from this.

Can there be anything common between the change in pitch of the sound of a motor bike as it zips past us and the light emitted by distant stars as they move away from us? Yes! They are subjected to the Doppler effect.

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