Listing all results (138)

Episode 315: The Inverse Square Law

In this learning episode, produced by the Institute of Physics, students investigate how the intensity of radiation decreases with distance from the source.

The activities include:
* demonstration and discussion on how radiation spreads
* worked example to illustrate thinking in proportions...

Publication date:
2000 - 2009

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Episode 317: Reflection and Refraction of Waves

This learning episode, from the Institute of Physics, contains activities in which students look at reflection, refraction and Snell's law.

Through discussion, demonstration and practical experiments, students look at:
* reflection and refraction with a ripple tank
* the 'marching soldiers'...

Publication date:
2000 - 2009

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Episode 318: Total Internal Reflection

Produced by the Institute of Physics, this learning episode helps students to observe total internal reflection (TIR) as a consequence of refraction. Students use a semi-circular block to observe TIR and see how a fibre optic can be used to transmit information.

The activities include:
* ray tracing...

Publication date:
2000 - 2009

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Episode 320: Superposition

This learning episode, from the Institute of Physics, introduces the basic idea of superposition of waves, explaining what happens when two or more waves meet.

The activities include:
• recapping students’ knowledge and understanding of waves
• demonstration of waves using a rope
•...

Publication date:
2000 - 2009

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Episode 321: Interference Patterns

This learning episode from the Institute of Physics covers the constructive and destructive interference of waves.

Through discussion, student experiments and teacher demonstrations, students look at:
* simple interference of waves
* waves from two sound sources
* demonstration of Young's...

Publication date:
2000 - 2009

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Episode 322: Diffraction Gratings

In this learning episode, from the Institute of Physics, students look at different light sources through diffraction gratings. Using this system, students measure the wavelength of a laser and derive the grating formula.

The activities include:
* looking through gratings
* deriving the grating...

Publication date:
2000 - 2009

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Episode 100: Preparation for Electric Current Topic

From the Institute of Physics, this topic looks at basic electrical ideas, particularly current, potential difference and energy. The topic is split into teaching episodes. These are self-contained activities of varying time periods. The topics in this section include:

Episode 101:...

Publication date:
2000 - 2009

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Episode 102: Current as a Flow of Charge

From the Institute of Physics, these activities allow students to understand the idea of electric charge and its relationship to a flow of current.

There are a range of activities and these include:
• using an analogy to represent the movement of charge
• defining current and the coulomb...

Publication date:
2000 - 2009

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Episode 103: Currents and Charge Carriers

From the Institute of Physics, these activities present a range of examples involving different types of charge carrier and links the measured current to rates of flow of charge.

The activities consist of a series of demonstrations which could be set up before the lesson. These include:
• considering...

Publication date:
2000 - 2009

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Episode 104: Drift Velocity

From the Institute of Physics, this learning episode shows that charge carriers in good conductors usually move very slowly. It illustrates the derivation and use of the equation I = nAvq.

A range of activities include:
• viewing the movement of permanganate ions in an electric field
•...

Publication date:
2000 - 2009

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