Secchi Disk Electricity & Magnetism Snell’s Law and the critical

Snell’s Law and the critical angle

no-fuss operation: Built-in on/off switch and stable output make it easy to demo or run lab stations without complicated wiring or controls

99 m/s (measures in cm/s and km/h

Students can investigate circuitry

Quick quantitative measurements: Built-in photogate slots make data collection fast and reliable

Secchi Disk Electricity & Magnetism Snell’s Law and the criticalTurn how clear a lake looks into a number you can track The Secchi Disk is an 8. 75" white plastic disk marked with black and white quadrants, attached to a weighted, foot marked line. Lower it into a lake, pond, stream, or aquarium until the pattern disappears from view, then read the depth off the line. That depth, the Secchi depth, is a standard field measurement of water clarity used by limnologists and water quality monitoring programs. The