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These grow and shrink at regular intervals
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Secrets of Size: Atoms to Supergalaxies

These grow and shrinkat regular intervals, so they pulse in brightnessat predictable...

These grow and shrink
at regular intervals, so they pulse in brightness
at predictable periods which vary from days to months

Full Transcript

00:00:01.000 --> 00:00:05.679
These grow and shrink at regular intervals,
00:00:05.068 --> 00:00:10.199
so they pulse in brightness at predictable periods
00:00:10.002 --> 00:00:13.016
which vary from days to months.
Duration
13 seconds
Views
18
Timestamp in Movie
00:18:59
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 Seeing things at this scale has revealed - Secrets of Size: Atoms to Supergalaxies 00:08
Seeing things at this scale has revealed
S01 • E02 Leavitt concentrated on looking for variable stars - Secrets of Size: Atoms to Supergalaxies 00:11
Leavitt concentrated on looking for variable stars
S01 • E02 I find it hard to believe, looking at a picture like this, - Secrets of Size: Atoms to Supergalaxies 00:11
I find it hard to believe, looking at a picture like this,
S01 • E01 They could see and begin to understand how genetics worked - Secrets of Size: Atoms to Supergalaxies 00:09
They could see and begin to understand how genetics worked
S01 • E02 Mind-blowing to look at that and think about how kind of - Secrets of Size: Atoms to Supergalaxies 00:07
Mind-blowing to look at that and think about how kind of
S01 • E01 They could watch a white blood cell attacking an infection. - Secrets of Size: Atoms to Supergalaxies 00:06
They could watch a white blood cell attacking an infection.
S01 • E01 And they could now see beyond the living world, - Secrets of Size: Atoms to Supergalaxies 00:08
And they could now see beyond the living world,
S01 • E02 And looking at these stars, she noticed something - Secrets of Size: Atoms to Supergalaxies 00:08
And looking at these stars, she noticed something
S01 • E02 Leavitt realised that there was a strict relationship - Secrets of Size: Atoms to Supergalaxies 00:10
Leavitt realised that there was a strict relationship
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,