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Leavitt realised that there was a strict relationship
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Secrets of Size: Atoms to Supergalaxies

Leavitt realised that therewas a strict relationship between how intrinsically brightthese...

Leavitt realised that there
was a strict relationship between how intrinsically bright
these stars are and how quickly they pulse

Full Transcript

00:00:01.000 --> 00:00:04.839
Leavitt realised that there was a strict relationship
00:00:04.084 --> 00:00:07.999
between how intrinsically bright these stars are
00:00:08.000 --> 00:00:10.044
and how quickly they pulse.
Duration
10 seconds
Views
22
Timestamp in Movie
00:19:46
Uploaded
May 06, 2025
Season
1
Episode
2
Genres
documentary

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Movie Summary

In this mind-bending series, Jim Al-Khalili explores the vast range of size in the universe, from tiny atoms to gigantic, interconnected galaxies.
S01 • E01 Then, in 1991, a group in Japan saw this - - Secrets of Size: Atoms to Supergalaxies 00:11
Then, in 1991, a group in Japan saw this -
S01 • E02 So if we look at these four pairs of lights, - Secrets of Size: Atoms to Supergalaxies 00:08
So if we look at these four pairs of lights,
S01 • E01 Ten times smaller than a virus. - Secrets of Size: Atoms to Supergalaxies 00:04
Ten times smaller than a virus.
S01 • E01 They were carbon nanotubes, - Secrets of Size: Atoms to Supergalaxies 00:10
They were carbon nanotubes,
S01 • E02 And at this end, these are the brightest pair, - Secrets of Size: Atoms to Supergalaxies 00:07
And at this end, these are the brightest pair,
S01 • E02 And that's exactly what Leavitt noticed, - Secrets of Size: Atoms to Supergalaxies 00:13
And that's exactly what Leavitt noticed,
S01 • E01 And they had unexpected properties, - Secrets of Size: Atoms to Supergalaxies 00:09
And they had unexpected properties,
S01 • E01 This is one of the blackest materials in the world. - Secrets of Size: Atoms to Supergalaxies 00:05
This is one of the blackest materials in the world.
S01 • E02 If we see two Cepheid variable stars - Secrets of Size: Atoms to Supergalaxies 00:12
If we see two Cepheid variable stars
S01 • E01 See, it might look to you like a flat black square - Secrets of Size: Atoms to Supergalaxies 00:10
See, it might look to you like a flat black square
S01 • E02 So, if one seems dimmer to us, - Secrets of Size: Atoms to Supergalaxies 00:07
So, if one seems dimmer to us,
S01 • E01 And yet, looking at it face on, - Secrets of Size: Atoms to Supergalaxies 00:06
And yet, looking at it face on,
S01 • E02 Leavitt had found a way we can measure huge distances in space. - Secrets of Size: Atoms to Supergalaxies 00:06
Leavitt had found a way we can measure huge distances in spa...
S01 • E01 Now, normally when we see objects, - Secrets of Size: Atoms to Supergalaxies 00:13
Now, normally when we see objects,
S01 • E02 In 1923, Edwin Hubble pointed a telescope - Secrets of Size: Atoms to Supergalaxies 00:12
In 1923, Edwin Hubble pointed a telescope
S01 • E01 Light falls on the surface and then just disappears forever. - Secrets of Size: Atoms to Supergalaxies 00:05
Light falls on the surface and then just disappears forever.
S01 • E01 What's perhaps most surprising - Secrets of Size: Atoms to Supergalaxies 00:07
What's perhaps most surprising
S01 • E02 He measured its pulse rate to be very slow - 31 days. - Secrets of Size: Atoms to Supergalaxies 00:05
He measured its pulse rate to be very slow - 31 days.
S01 • E02 So, using Leavitt's discovery, - Secrets of Size: Atoms to Supergalaxies 00:07
So, using Leavitt's discovery,
S01 • E01 The paint, called Vantablack, - Secrets of Size: Atoms to Supergalaxies 00:07
The paint, called Vantablack,