Periscope and Pinhole Camera

Science
Class 6–8
3D model
English

Periscope and Pinhole Camera: a 3D model for Class 6–8 Science, covering Angles of incidence and reflection are measured from the normal, and they are equal., Two parallel mirrors at 45 degrees turn light down a tube and out again after exactly two reflections., A periscope gives an upright image, so you can see over a wall., If one mirror is tilted, the light misses the exit and no image reaches the eye., Light travels in straight lines, so rays from the top and bottom of an object cross at a pinhole..

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Also called

periscope · pinhole camera · plane mirror reflection · laws of reflection · angle of incidence equals angle of reflection · inverted image · light travels in straight lines · rectilinear propagation of light · camera obscura

Topics

Angles of incidence and reflection are measured from the normal, and they are equal.
Two parallel mirrors at 45 degrees turn light down a tube and out again after exactly two reflections.
A periscope gives an upright image, so you can see over a wall.
If one mirror is tilted, the light misses the exit and no image reaches the eye.
Light travels in straight lines, so rays from the top and bottom of an object cross at a pinhole.
A pinhole camera makes an inverted image without any lens.
Moving the object farther away makes the pinhole image smaller.
A bigger hole gives a brighter but blurrier image; a smaller hole gives a sharper but dimmer one.

About this model

A GLB file of about 666 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Lably procedural teaching model, newly authored for Lably AR. | Original geometry and animation authored for Lably (no third-party assets).

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