Ponderings of science, philosophy, history, society, and many other topics
The other day I shared a video on quantum computing, which I thought was informative, but the feedback I received is that it wasn't for anyone not already versed in the subject. Since I once struggled to understand this subject myself, I tried to think of a way of describing it that would actually help. … Continue reading A way to understand quantum computing
I recently had a conversation with someone, spurred by the last post, that led to yet another description of the Everett many-worlds interpretation of quantum mechanics, which I think is worth putting in a post. It approaches the interpretation from a different angle than I've used before. As mentioned last time, the central mystery of … Continue reading The entanglements and many worlds of Schrödinger’s cat
Quantum physics has been on my mind again lately, somewhat triggered by a recent conversation with Wyrd Smythe on his blog. I've always known quantum nonlocality has nuances, but stuff I read this week revealed some wrinkles I wasn't aware of. (Well, I was aware of them, but wasn't aware they pertained to nonlocality.) A … Continue reading The nature of quantum nonlocality
A recent tweet by Sean Carroll has me thinking. https://twitter.com/seanmcarroll/status/1204128666273271808 Quantum decoherence is said to occur when a particular quantum system becomes entangled with its environment, that is to say, as information about the quantum system spreads throughout the environment, that system undergoes at least an apparent wave function collapse. It stops behaving like a … Continue reading Is entanglement decoherence from the outside, and decoherence entanglement from the inside?
Albert Einstein, with his theory of special relativity, established that the speed of light is the absolute speed limit of the universe. A rocket ship attempting to accelerate to the speed of light encounters some well known effects: time dilation, mass increase, and length contraction. The closer to the speed of light it gets, the … Continue reading Why you can’t use quantum entanglement for faster than light communication
A nice video. I've read about quantum decoherence and entanglement several times, but seeing it animated helped. At least for me. http://www.youtube.com/watch?v=1zD1U1sIPQ4 Confused by how particles can be in two places at once? Wondering how particles can instantly communicate with each other no matter what the distance? Quantum physics is a field of study that … Continue reading Quantum Entanglement Explained
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