| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| The spreading of waves around obstacles, it occurs with light, sound & very small moving particles | diffraction | $2,000 | DJ | PHYSICS | 2026-03-02 | #9511 | |
| A special grating with parallel slits is name for this spreading or bending of light waves similar to refraction | diffraction | $1,200 | DJ | PHYSICS | 2021-11-03 | #8503 | |
| In refraction, radiation passes from one medium into another; this is when radiation bends around an obstacle's edge | diffraction | $800 | DJ | PHYSICS | 2009-03-05 | #5644 |