Question
Many spacecraft use the “ring laser” type of these devices for navigation. For 10 points each:
[10e] Name these devices for maintaining orientation and angular velocity that consist of a wheel mounted to gimbals that provide pivoted supports.
ANSWER: gyroscopes [accept ring laser gyroscopes]
[10h] This experiment used four gyroscopes on a satellite to measure spacetime curvature near Earth to verify general relativity’s predictions of the geodetic effect and frame-dragging. This experiment followed a test of the equivalence principle.
ANSWER: Gravity Probe B [or GP-B] (The earlier experiment is Gravity Probe A.)
[10m] As they exhibit angular velocity, ring laser gyroscopes measure rotation via this phenomenon. This phenomenon is observed in the Sagnac (“SAN-yak”) effect and produces namesake “fringes.”
ANSWER: wave interference [accept interference fringes]
<Ganon Evans, Science - Physics> ~20832~ <Editor: David Bass>
Summary
| 2023 PACE NSC | 06/10/2023 | Y | 35 | 9.71 | 80% | 14% | 3% |
Data
| Thomas Jefferson B | Barrington B | 10 | 0 | 0 | 10 |
| Canyon Crest | Maggie Walker C | 10 | 0 | 0 | 10 |
| Rockford Auburn A | Carbondale | 10 | 0 | 0 | 10 |
| Chattahoochee A | Winston Churchill B | 0 | 0 | 0 | 0 |
| Choate Rosemary Hall | Moberly | 0 | 0 | 0 | 0 |
| Dunbar | Cincinnati Hills Christian | 10 | 0 | 0 | 10 |
| Dallas County | Rockford Auburn B | 10 | 0 | 10 | 20 |
| Detroit Country Day | Winnebago | 10 | 0 | 0 | 10 |
| Stevenson B | Heights | 10 | 0 | 0 | 10 |
| Hunter A | Washington | 10 | 0 | 10 | 20 |
| Plymouth | Innovation Academy B | 0 | 0 | 0 | 0 |
| Irvington A | Norman | 10 | 0 | 0 | 10 |
| Maggie Walker A | John Adams A | 10 | 0 | 0 | 10 |
| Johns Creek A | Hoover B | 10 | 0 | 0 | 10 |
| Johns Creek B | Elkhorn North | 10 | 0 | 10 | 20 |
| Belmont | Lake Highland | 10 | 0 | 0 | 10 |
| Thomas Jefferson A | Lincoln-Way East | 10 | 0 | 0 | 10 |
| Kinkaid | Maggie Walker B | 10 | 10 | 0 | 20 |
| Mexico | Detroit Catholic Central B | 0 | 0 | 0 | 0 |
| Mira Loma | Mercer County | 10 | 0 | 0 | 10 |
| Midtown | Norris | 0 | 0 | 0 | 0 |
| Northmont A | Detroit Catholic Central C | 10 | 0 | 0 | 10 |
| Innovation Academy A | Northmont B | 10 | 0 | 0 | 10 |
| Parkway West | Saint Joseph | 10 | 0 | 0 | 10 |
| Richard Montgomery | Hunter B | 10 | 0 | 0 | 10 |
| Solon | Stevenson A | 10 | 0 | 0 | 10 |
| St. Mark's | Belvidere | 10 | 0 | 0 | 10 |
| Troy | Hinsdale Central | 10 | 0 | 0 | 10 |
| Thomas Jefferson D | University Lab | 10 | 0 | 0 | 10 |
| Detroit Catholic Central A | Walter Payton | 10 | 0 | 0 | 10 |
| Thomas Jefferson C | Waukee | 0 | 0 | 0 | 0 |
| Barrington A | West Point | 10 | 0 | 10 | 20 |
| Winston Churchill A | New Brighton | 10 | 0 | 0 | 10 |
| John Adams B | Woodland | 0 | 0 | 0 | 0 |
| William Fremd | Chattahoochee B | 10 | 0 | 10 | 20 |