【To all users】

• It is a water tank for optical experiments equipped with a light ray source (LED) which emits light ray linearly from the outer circumference of a circular water tank.
• Change the emission angle of the light source and observe the reflection and refraction of light that occurs at the interface between water and air.
• The light ray source moves around 270 degrees of the outer circumference of the tank.

【To teachers】

• Equipped with a linear LED (high brightness white) as the light source, you can clearly observe the optical path even in a bright classroom.
• A dry battery or AC adapter can be used as the power source, therefore it can be used almost anywhere.

【To students】

• Suitable for teachers’ demonstration to students in a laboratory because of its tank size (φ250mm).

• Water tank: φ250mm, material: transparent acrylic resin,
• Whole size: 230 × 100 × 350mm,
• Scale: 5 degrees scale in 360 degrees,
• Light source: Linear ray LED(high brightness white),
•  Dry battery AA x 3pcs (not included) or AC adapter – not included (Output: DC 5V and 2.2A, Plug: Center-plus (center positive).