science and music. and beer. and dogs.

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Joined 1 year ago
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Cake day: June 13th, 2023

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  • Many here will be seeing this for the first time. For others it will be a fun reminder of something they haven’t seen for a long time. Still others will find it to be the same old tired shit they’re sick of.

    When you see the same old tired shit on Lemmy (or any social media), just move on. There will be plenty that is new to you.







  • I thought the situation was a little like Android. Google develops an open source version (along with as many independent developers who wish to contribute), then sticks on a bunch of proprietary BS and sells that version to phone companies. If chromium is to chrome like vanilla android is to android with g-services, then I guess my question really becomes: is google making this change in the underlying code base, or just in the BS they put on top?

    Or am I confused about how the connection works between chrome and chromium?



  • tate@lemmy.sdf.orgtoScience Memes@mander.xyz8 Minutes
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    1 month ago

    Which two event are you talking about being simultaneous? The Sun going out and Earthers observing it? Those things will not be simultaneous in any reference frame, because they are “light-like” separated. (ie they lie on a 45 degree line in a Minkowski plot.)






  • In physics we call some results “laws” and some “theories.” The difference has absolutely nothing to do with our certainty in the validity of the results.

    Newton’s Laws of motion are called that because they can be written as concise mathematical equations, and allof the content is there. Einstein’s Theory of special relativity is just as valid, and even contains Newton’s Laws as a special case, but the content of the theory can’t be written in simple, concise equations. There are several equations included in special relativity, but they do not represent the entire content. For example, the most important statement of the theory cannot be written in equation form at all: “The measured speed of light in a vacuum will be the same for all observers in inertial reference frames, regardless of the relative speed of their reference frame.”

    Darwin’s Theory of Evolution likewise cannot be written in concise statements (mathematical or otherwise), but our certainty in its validity is no less than in Newton’s Laws.

    Another important subtlety: I was careful to say that we are certain of the validity. People who don’t know better are fond of saying that Newton’s Laws are wrong. This is a fallacy. Scientific laws and theories can only be valid or not, they can never be true.