Spare Tank Plug

Details

Demo use only

Instances

Used in these demonstrations

$Complete setup with laser and rotating mirror mount on left, water tank on wooden block on right; green beam enters the water from below, reflects and refracts at the water-air surface$

Safety

Rotating Mirror beside Water Tank

Students observe total internal reflection at a water-air interface by sweeping a laser beam through a range of incident angles. The reflected beam visibly brightens as the angle approaches critical, …

Green laser beam trapped inside a curved stream of water flowing from an acrylic tank, with bright reflection points visible along the stream's parabolic arc against a dark background

Safety

Water Light Pipe

A laser beam follows a curved stream of water flowing from a tank, trapped by total internal reflection at the water-air boundary. A striking visual analogy for fiber optics — …

Reserve This Equipment

Demo use only

This equipment supports lecture demonstrations and cannot be reserved directly — it is assigned automatically as part of a demonstration. To use it, request a demo that includes it.