Listing all results (73)

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
•...

Episode 108: Resistance

From the Institute of Physics, this learning episode provides a quantitative definition for resistance (R = V / I) which reinforces the qualitative notion that more resistance means less current. It looks at Ohm’s law, describing that this is not the same thing as the definition of resistance.

Activities...

Episode 115: Energy and Power

In these activities, from the Institute of Physics, the concept of electrical power is explored. Students find that the energy transferred by an electrical component depends on the potential difference, current and the time for which it operates.

...

Episode 123: Alternating Current

Produced by the Institute of Physics, this learning episode helps students to distinguish alternating from direct currents before revising why alternating current (ac) is so important.

The range of activities include...

Episode 128: Energy Stored by a Capacitor

Produced by the Institute of Physics, this learning episode looks at the energy stored in a capacitor. Students undertake a practical investigation to look at the energy stored and how this varies with potential difference and capacitance.

...

Episode 701: Observing Stars

In this learning episode, from the Institute of Physics, students see that what we know about the Universe comes from observations which rely on the radiation and particles that reach us on Earth. Students discuss astronomical observations including spectra and the information they can carry.

The activities...

Episode 702: Red Shift

Produced by the Institute of Physics, these activities demonstrate the Doppler effect.

Using sound and microwaves, the activities illustrate how changes in wavelength of spectral lines allow us to determine the motion of astronomical objects relative to ourselves.

The activities include:
*...

Episode 704: The Expanding Universe

Produced by the Institute of Physics, in this learning episode, students look at the expanding universe by examining galaxies, Hubble's observations and cosmological red shift. A simple activity allows students to model Hubble's law.

Through discussion and activities, students look at:
* observing a...

Episode 504: How Lasers Work

Produced by the Institute of Physics, through demonstrations, discussions and worked examples, students consider the use of lasers and the underlying theory of how they work.

The activities in this learning episode look at:
* demonstrating a laser beam
* the uses of lasers
* safety with...

Episode 507: Electron Standing Waves

This learning episode, from the Institute of Physics, looks at Melde's experiment. It uses the analogy of a standing wave in a stretched elastic cord before going on to introduce the idea of standing waves within an atom.

The activities include:
* Melde’s experiment
* electron waves in atoms...

Pages

View all publishers