Let’s Discuss the Lorentz Transforms – Part 2: The Equation of the Sphere, or Is It?

The previous discussion done, we have surmounted the difficult waters and are now sailing into something much more pleasure-like and hopefully even entertaining.

As I promised, we will be discussing the invariance of the interval, that is to say, the following relation:

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Let’s Discuss the Lorentz Transforms – Part 2: The Equation of the Sphere, or Is It?
Source: geektimes

How to be an effective engineer?

This question comes up for a lot of us as we trying to advance our career and reach new heights. At the moment when I was challenged by it, I came across a wonderful book by Edmond Lau «Effective Engineer».

As always going through the book, I write new thoughts down. And today I want to share the compilation of things that I have found useful from the book. This is by no means an ad for the book, but I think it has some really interesting approaches for us to explore together.

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How to be an effective engineer?
Source: habrahabr