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Listed under:  Lenses

Test the vision of four people to identify vision problems: myopia, hyperopia or presbyopia. Compare effects of corrective lenses on reading at different distances. Look at a cross-section of the eye showing focal variations linked to a vision problem. Explore how common vision problems are by doing a survey. This learning ...

Optics and refraction: focal point

Look at light rays magnified by a lens. Notice how light converges after it leaves the lens. Examine how curvature and thickness of a lens affect focal length. This learning object is one in a series of three objects. The series is also packaged as a combined learning object.

Far out lenses

Look at the Moon through a simple telescope. Adjust the focal length of two convex lenses and compare the results. Explore relationships between optical variables such as focal length, position of objective lens, convexity, image inversion and lens size. This learning object is one in a series of two learning objects. The ...

Using 'Light and vision' - Teacher idea

This Teacher idea explores the eye as a receptor of light. Students build on prior understandings of light relating to wave theory and particle theory, and move on to investigate reflection, refraction, optics and prisms. It includes a unit of work developed and trialled by a teacher.

Using a lens to bend light

How can a water-filled plastic straw be used to decode a secret message? Watch as the Surfing Scientist demonstrates how lenses with a curved surface do curious things to light.

Optics and refraction: focal point [ESL]

Look at how light rays behave when they pass through a lens. Notice how light converges after it leaves the lens. Examine how curvature and thickness of a lens affect focal length. This learning object is one in a series of three objects.

Optics and prisms

Position a prism to split white light into its component colours. Predict the seven colours that will be produced. Test whether the colours seen are affected by the prism material: glass, flint glass or diamond. Explore whether filters add or remove colours from the spectrum. This learning object is a combination of three ...

Optics and prisms: split light

Position a prism to split white light into its component colours. Predict the seven colours that will be produced. Explain why dispersion occurs. This learning object is one in a series of three objects. The series is also packaged as a combined learning object.

Optics and prisms: materials

Position a prism to split white light into its component colours. Test whether the colours seen are affected by the prism material: glass, flint glass or diamond. Explain why dispersion occurs in all of the prism materials. This learning object is one in a series of three objects. The series is also packaged as a combined ...

Optics and prisms: coloured light

Position a prism to split white light into its component colours. Explore whether filters add or remove colours from the spectrum. This learning object is one in a series of three learning objects. The series is also packaged as a combined learning object.

Eyeball challenge: stone wheel puzzle

Investigate a range of animal eyes: dog, cat, bee, fish, eagle and human. Discover how these animals see things in different ways because their eyes have different structures. For example, look at an animal's field of view, how it focuses and sees colours. Choose eyes with good close-up vision to solve a puzzle and unlock ...

Eyeball challenge: mission 2

Investigate a range of animal eyes: dog, cat, bee, fish, eagle and human. Discover how these animals see things in different ways because their eyes have different structures. For example, look at an animal's field of view, how it focuses and sees colours. Find your way through an ancient temple by choosing eyes suited ...

Light and the law of reflection: Teacher idea

In this Teacher idea, students explore how light travels and the law of reflection. They consolidate their knowledge using of a range of learning objects then explore the eye and the use of lenses. It includes a unit of work developed and trialled by a teacher.

The Wilsons Promontory lighthouse

This is an excerpt from a 10-minute silent promotional film about a camping trip to the Wilsons Promontory National Park. It begins with the intertitle 'The interior of the Lighthouse showing the prisms revolving./(Picture taken from below)', which introduces footage of the lighthouse's revolving mirrors. A second intertitle ...

'Outside world comes to keeper of the light', 1933 - asset 4

This is a clip taken from the end of an item featured in the weekly episode of the black-and-white newsreel Cinesound Review released to cinemas on 13 April 1933. The item as a whole is about the visit of the supply ship 'Cape York' to lighthouses along the coast of Tasmania. The clip opens with the family of a lighthouse ...

Triunial projector, c1890s

This is a triunial or triple projector, also known as a triple lens magic lantern, probably from the 1890s. The projector is mainly made from varnished wood such as mahogany, and brass. Three lens systems in telescopic tubes project from the box, each covered with a brass lens cap. In front of each tube is a slide gate, ...

Sutton panoramic camera, c1861

This is a panoramic camera, designed in England by Thomas Sutton, and one of about 30 produced. The camera lens is made up of two hollow glass hemispheres. The flap on the front of the camera lifts up to allow an image to be taken.

Lens Simulation (sk- Intel)

Students learn about the application of light refraction by completing a series of tasks based on light refraction using both concave and convex lenses.