This Physics learning lab experience allows teachers and students to perform experiments with the phenomenon of refraction and reflection of light, also called Snell’s Law.
GEM score
-0.01
24h
—
GEM rank
#170,459 of 179,652
Scores as of 26 Jul 2026
Free view: this score is three months behind the live score.
Coverage from the past 7 days.
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Stats through 26 Jul 2026
Average
-0.01
Peak
-0.01
Tracked since
26 Jul 2026
The chart appears once there are at least two scored days between 3 and 12 months ago. Subscribe to our Patreon for access
| Date | GEM score |
|---|---|
| Subscribe to our Patreon for access | |
| 26 Jul 2026 | -0.01 |
