Chapter
Detecting the Signal of Gravitational Waves
54:44 - 1:02:43 (07:58)
The detection of gravitational waves depends on incredibly precise measurements, compensating even for the effects of general relativity on satellite signals. Scientists use a network of satellites to triangulate precise measurements of time to detect these waves.
Clips
In this episode, the concept of the curvature of space and time is explained by the host and the guest, Kip Thorne.
54:44 - 56:10 (01:25)
Summary
In this episode, the concept of the curvature of space and time is explained by the host and the guest, Kip Thorne. They discuss its relation to gravitational waves and how it affects our daily lives.
ChapterDetecting the Signal of Gravitational Waves
Episode#213 – Barry Barish: Gravitational Waves and the Most Precise Device Ever Built
PodcastLex Fridman Podcast
The GPS system relies on Einstein's equations and the correction for general relativity to properly locate users, which is why using the system without Einstein's equations would result in a user going off a road.
56:10 - 57:25 (01:15)
Summary
The GPS system relies on Einstein's equations and the correction for general relativity to properly locate users, which is why using the system without Einstein's equations would result in a user going off a road.
ChapterDetecting the Signal of Gravitational Waves
Episode#213 – Barry Barish: Gravitational Waves and the Most Precise Device Ever Built
PodcastLex Fridman Podcast
Scientists aimed to detect weak signals of gravitational waves using a large bar of aluminium which was made into a cylinder and surrounded by highly sensitive detectors.
57:25 - 59:07 (01:41)
Summary
Scientists aimed to detect weak signals of gravitational waves using a large bar of aluminium which was made into a cylinder and surrounded by highly sensitive detectors.
ChapterDetecting the Signal of Gravitational Waves
Episode#213 – Barry Barish: Gravitational Waves and the Most Precise Device Ever Built
PodcastLex Fridman Podcast
The interferometer sends light down two perpendicular directions and measures differences in timing to determine distortions in time.
59:07 - 1:00:43 (01:35)
Summary
The interferometer sends light down two perpendicular directions and measures differences in timing to determine distortions in time. The measurement must be extremely accurate, with a distortion of one part in 10 to the 21, which is achieved by making the arms of the interferometer long.
ChapterDetecting the Signal of Gravitational Waves
Episode#213 – Barry Barish: Gravitational Waves and the Most Precise Device Ever Built
PodcastLex Fridman Podcast
The podcast discusses the precision of instruments used to measure the smallest lengths in the universe.
1:00:43 - 1:02:43 (01:59)
Summary
The podcast discusses the precision of instruments used to measure the smallest lengths in the universe. The instrument mentioned has two long vacuum pipes and can measure to 10^-18 meters.