hossenfelder

Philosophy Fridays Science

What is “Nothing”?

This video spans the realms of physics and philosophy and was inspired by “Levels of Nothing” by Robert Lawrence Kuhn, in the book “The Mystery of Existence: Why is there Anything At All” by John Leslie and Robert Lawrence Kuhn.

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Mobile

5G: The Trouble With the New Phone Network

5G isn’t all that it’s cracked up to be. Don’t get me wrong, it’s usually faster, but the EM spectrum it uses has issues. Sabine explains. Correction to what I say at 15 mins 57 seconds: It’s should be 3 orders of magnitude, not 30. You’d think that technology and science make a good team, […]

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Quantum Computing

Counterfactual Quantum Computation is Really Weird

Events that could have happened but didn’t, so called counterfactual events, are but a mind-game in our reality. In quantum reality, however, they are quite real indeed. In this video I explain how this can be used to do a computation without actually running the computer. This is called “counterfactual computation” (or “counterfactual quantum computation” […]

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Quantum Computing Science

Can particles really be in two places at once?

Here’s another stellar video from Sabine Hossenfelder. Today I tell you what happened when I wrote an opinion piece for the Guardian about quantum computing, had to explain what a qubit is, and decided against using the phrase that it “can be in two states at the same time”. What happened next and what did […]

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Science

Has quantum mechanics proved that reality does not exist?

In the past years you may have seen headlines claiming that objective reality does not exist because some quantum mechanics experiment has shown it. In this video Sabine Hossenfelder explains what this is all about and why this experiment doesn’t show that reality doesn’t exist.

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Science

How bad is plastic?

Sabine Hossenfelder examines how bad plastic is. Time stamps: 0:00 Intro 0:31 Sponsor Message 1:22 What is plastic? 2:46 How long does plastic last? 4:49 Why worry about plastic? 8:50 Bacteria that digest plastic 12:34 Are bioplastics any good? 15:36 Steel from plastic

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Space

Terraforming Mars in 3 Just Simple Steps

In this not-quite-serious video Sabine Hossenfelder explains what it would take to terraform Mars and make it habitable for humans. Time stamps: 0:00 Intro 0:58 Conditions on Mars 2:02 Step 1: Creating a Magnetic Field 4:50 Step 2: Creating an Atmosphere 6:06 Step 3: Converting CO2 to O2 8:46 Sponsor Message

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