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This bit, the cathode, boils off electrons
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Secrets of Size: Atoms to Supergalaxies

This bit, the cathode,boils off electrons which are then acceleratedin a vacuum to hit the...

This bit, the cathode,
boils off electrons which are then accelerated
in a vacuum to hit the phosphorous screen
at the front

Full Transcript

00:00:01.000 --> 00:00:05.199
This bit, the cathode, boils off electrons
00:00:05.002 --> 00:00:08.759
which are then accelerated in a vacuum
00:00:08.076 --> 00:00:12.002
to hit the phosphorous screen at the front.
Duration
12 seconds
Views
16
Timestamp in Movie
00:12:54
Uploaded
May 06, 2025
Season
1
Episode
1
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 • E02 For Solar Orbiter's instruments to work at all, - Secrets of Size: Atoms to Supergalaxies 00:10
For Solar Orbiter's instruments to work at all,
S01 • E02 The heat shield is always pointed at the sun, - Secrets of Size: Atoms to Supergalaxies 00:10
The heat shield is always pointed at the sun,
S01 • E01 Now, ordinarily on a TV set, - Secrets of Size: Atoms to Supergalaxies 00:16
Now, ordinarily on a TV set,
S01 • E02 The instrument that Tim and Helen built is a magnetometer. - Secrets of Size: Atoms to Supergalaxies 00:05
The instrument that Tim and Helen built is a magnetometer.
S01 • E01 Now, because electrons are negatively charged, - Secrets of Size: Atoms to Supergalaxies 00:06
Now, because electrons are negatively charged,
S01 • E02 The heat shield can get to temperatures of up to 500 degrees - Secrets of Size: Atoms to Supergalaxies 00:18
The heat shield can get to temperatures of up to 500 degrees
S01 • E01 And to show that, I've got a small magnet at the end of this stick, - Secrets of Size: Atoms to Supergalaxies 00:12
And to show that, I've got a small magnet at the end of...
S01 • E02 Because although it's cold, it's a stable temperature, - Secrets of Size: Atoms to Supergalaxies 00:06
Because although it's cold, it's a stable temperat...
S01 • E01 That's because there are three electron beams, - Secrets of Size: Atoms to Supergalaxies 00:06
That's because there are three electron beams,
S01 • E02 The Orbiter takes photographs of the sun's surface - Secrets of Size: Atoms to Supergalaxies 00:08
The Orbiter takes photographs of the sun's surface
S01 • E01 The electron beam is scanning across the whole screen - Secrets of Size: Atoms to Supergalaxies 00:06
The electron beam is scanning across the whole screen
S01 • E02 The results are then sent straight back to Earth, - Secrets of Size: Atoms to Supergalaxies 00:06
The results are then sent straight back to Earth,
S01 • E01 But I can still distort this picture using my magnet. - Secrets of Size: Atoms to Supergalaxies 00:05
But I can still distort this picture using my magnet.
S01 • E02 Do you want to have a look? Yes, please. So, this is the kind of data - Secrets of Size: Atoms to Supergalaxies 00:16
Do you want to have a look? Yes, please. So, this is the kin...
S01 • E01 So, if magnets can be used to control and direct - Secrets of Size: Atoms to Supergalaxies 00:14
So, if magnets can be used to control and direct
S01 • E02 The orbiter has just started taking photos like this, - Secrets of Size: Atoms to Supergalaxies 00:10
The orbiter has just started taking photos like this,
S01 • E01 And this means that we can use electrons - Secrets of Size: Atoms to Supergalaxies 00:07
And this means that we can use electrons
S01 • E02 And the magnetic readings will help us understand - Secrets of Size: Atoms to Supergalaxies 00:07
And the magnetic readings will help us understand
S01 • E02 The aim is for Solar Orbiter to help unlock - Secrets of Size: Atoms to Supergalaxies 00:10
The aim is for Solar Orbiter to help unlock
S01 • E01 This is a modern electron microscope and, in many ways, - Secrets of Size: Atoms to Supergalaxies 00:09
This is a modern electron microscope and, in many ways,