Radioactive Decay & Nuclear Physics: half-life simulator

Radioactive Decay Radioactive substances such as Uranium and Radium spontaneously disintegrate while emitting radiation in the form  of α or ß particles and γ rays. The loss of an alpha particle result in the formation of a new element,  that occupy a position on the Periodic Table, two places to the…

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Electrical Resistor Simulator: GCSE, IGCSE & A Level: interactive practice

The following simulator helps you understand and master the calculations involving the resistors, combined both in parallel and series, in circuits. Resistors in Series When resistors are connected in series: The current through them is the same Total resistance is the sum of individual resistance of e…

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Multiple Choice Questions on Electricity: GCSE & IGCSE

Multiple Choice Questions - GCSE Physics - Electricity - Time: 30 minutes Created and Programmed by Vivax Solutions Start the Quiz Submit Quiz

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Multiple Choice Questions - GCSE Physics - Magnetism & Magnetic Fields - Time: 30 minutes Created and Programmed by Vivax Solutions Start the Quiz Submit Quiz

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Resultant Moment of Forces - GCSE, IGCSE and A Level physics

With the following simulation, you can practise the moment of forces interactively. Moment of a force = force X perpendicular distance from the pivot The resultant moment or the total moment is the algebraic sum of the moments  of forces.  In the simulation, the clockwise moment is considered as posit…

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Timed Test of Multiple Choice Questions for GCSE Physics

Multiple Choice Questions - GCSE Physics - Time: 40 minutes Created and Programmed by Vivax Solutions Start the Quiz Submit Quiz

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Chromatic Aberration

When light hits a lens, the components of the light refract through different angles, owing to their unique wavelengths.  The blue light, for instance, refracts more than the red light; the wave length of the former is smaller than that of the latter. Due to chromatic aberration, the image formed by …

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Refraction of Light - simulator for GCSE, IGCSE, A Level, IB, GCE O Level, GCE A Level

Refraction When light moves from a medium to another medium, its speed and the direction changes. This is called refraction of light. Snell's Law When light refracts, the ratio of the sine of the angle of incidence to the ratio of the sine of the angle of refraction remains the same for any two gi…

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Frequency Amplitude and Wavelength of a Transverse Wave - simulation

Waves A wave carries energy from a point to another point in a medium / vacuum without the movement of the particles along with it. In the above animation, the wave moves from the left to the right; the particles, however, just vibrate vertically without moving along with the wave. Transverse Waves If …

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Total resistance of combined resistors - series and parallel circuits

Resistors can be combined in two different methods; they are in series and in parallel. If two resistors, R 1 and R 2 2 , are in series, the total resistance, R t , is given by the following formula. R t = R 1 + R 2 If the same resistors are in parallel, the total resistance is as follows: R t = 1/R 1 + 1/R 2 E.g. …

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Resistance of a rectangular block

The resistance of a block/wire depends on two factors: they are the cross sectional area and the length. The relationship is given by the following formula: R = ρ l/A The longer the wire/block, the greater the resistance. The thinner the wire/block, the greater the resistance. The constant, ρ, in this c…

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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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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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