The Best Atomic Clock Ever Built?

The video discusses advancements in atomic clocks, focusing on precision and stability improvements by NIST, including the development of a ZDT clock. It also explores research on how sleep affects memory suppression, with implications for conditions like PTSD.

What is the primary difference between cesium-based atomic clocks and optical atomic clocks?

• Cesium clocks use visible light frequencies.

• Optical clocks use microwave frequencies.

• Optical clocks use eterbium or strontium atoms.

• Cesium clocks are more stable than optical clocks.

What problem does the ZDT clock aim to solve in atomic clocks?

• Improving the color of the laser.

• Reducing dead time noise.

• Decreasing the number of atoms used.

• Increasing the size of the clock.

How does the ZDT clock achieve higher stability?

• By increasing the dead time periods.

• By employing two sets of eterbium atoms.

• By using a single set of cesium atoms.

• By using a different type of laser.

What was the main finding of the study on sleep and memory suppression?

• Sleep enhances the ability to suppress memories.

• Overnight memories are harder to suppress than recent ones.

• Recent memories are more difficult to recall.

• Sleep has no effect on memory suppression.

Which part of the brain is involved in voluntary memory suppression?

• Neocortex

• Prefrontal cortex

• Amygdala

• Hippocampus