Astronomical Telescope Explained - with interactive practice

An astronomical telescope is a refractiong telescope that consists of two convex lenses - the objective lens and the eyepiece. The objective lens gathers light from a distant object and the image formed, is viewed through the eyepiece. When the final image is formed in infinity, the rays enter the ey…

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The jigsaw of the physicst, born in Oxford died in Cambridge

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Python Lambda Functions - anonymous functions

The following example shows how to use lambda functions in Python. They are anonymous functions; they save quite a bit of code writing and in this context, very efficient. Lambda functions can easily be extend in OOP, Obeject Oriented Programming, too.

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Newton's Second and Third Laws of Motion in One Example

Newton’s First Law of Motion An object is either at rest or moves at a constant speed in a straight line unless it is acted upon by an external force. Newton’s Second Law of Motion The rate of change of Momentum of an object is proportional to the force that caused it. In the above animation, the car i…

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Moving Average

The moving average, also known as the rolling average or running average, provides us with a value to make more meaningful predictions from a time-series; it will be clearer to you before the end of this tutorial how moving average can smooth out a data cure, while giving a more accurate picture fo…

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Differentiation: real life problem solving

Four squares from the corners of a square plate are removed so that it can be turned into a open cubical box. Find the length of a square to be removed in terms of the length of the main square so that the volume of the box is a maximum. Let the length of the plate be l and that of a small square be…

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Isaac Newton in a Jigsaw Puzzle - interactive play

This is a jigsaw puzzle of Sir Isaac Newton, the legendary English physicist who contributed so much to the field of mathematics and physics.  It is fully interactive. Play and have fun.

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The Redshift: star HD 94028 in stellar motion

This is the stellar motion of the star, HD-94028, in space. The light emitted by the star is collected through a diffraction grating to split it up into its various components, before being analysed. When the intensity of the hydrogen-alpha radiation plotted against the wavelength, the above graph c…

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