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Es wurden 368 Einträge gefunden
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- 111 bis 120
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Quantenphysik multimedial: Stehende Wellen
In diesem Video wird das Frequenzspektrum der Gitarrensaite durch die Anzahl von Knotenpunkten in den Schwingungsmoden beziehungsweise stehenden Wellen auf der schwingenden Saite erklärt.
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Quantenphysik multimedial: Schallwellen und Schallintensität
In diesem Lehrvideo wird demonstriert, wie mit einer LED die Schallintensität, die von einem Mikrophon aufgenommen wird, in ein Lichtsignal umgewandelt werden kann.
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Quantenphysik multimedial: Helium-Neon-Laser
In diesem Video wird das Prinzip des Gaslasers vorgestellt: Es zeigt sich, dass dafür Knotenlinien von Elektronen auf Photonen "vererbt" werden.
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Quantenphysik multimedial: Phase der Schallwelle
Dieses Video zeigt, wie mit einer LED das Bild einer sich im Raum ausbreitenden Schallwelle aufgenommen werden kann.
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Economic Principles: How the Economic Machine Works
This site established by Ray Dalio attempts to educate readers about the nature of domestic and global economies. The flagship media piece on the site is a 30-minute explication of how Dalio understands the economy, using a simple machine metaphor to explain the basic driving forces of the economy, to analyze what leads to ups and downs in the economy, and to define such basic ...
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Is the use of unmanned military drones ethical or criminal?
The use of unmanned aerial vehicles, or 'drones', is one of the most controversial elements of modern warfare. The technology allows for the delivery of bombs and bullets with no risk whatever to the attacker. But does the use of drones create new ethical problems? (UK: Guardian 2017)
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Gains from trade (part 1)
This video by the UK Trade Policy Observatory looks at the reasons why international trade can benefit an economy - be this through specialisation, more competition, or by leading to productivity change. An economy can therefore gain both by trading with countries which are very similar and those that are quite different. But not all firms, people or regions within an economy ...
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Gains from Trade (part 2)
This video from the UK Trade Policy Observatory forms part 2 of a two-part video series looking at why countries trade with each other. In this video we look at why trade results in winners and losers. Specialisation and the competition it creates in and between firms will mean some firms benefit whilst others struggle to adapt and / or compete (UK 2021).
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How America became a superpower
With over 800 military bases around the globe, the US is easily the most powerful nation on earth. But it wasn't always this way. The US once played an insignificant role in global affairs. In this 8-minute video, you can see the transformation (USA: Vox 2021).
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Philosophy for Beginners
This seven-part series of video recorded essays provides an overview of the diverse field of philosophy as well as its history (U.K. 2017).
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