The arrangement leaves gaps in the square’s four corners, two of which are filled with smaller circles that just barely touch ...

Hussein Soliman spins for three hours without faltering. In his rotation, the separation between self and divine collapses, and a century-old lineage returns to Cairo.

If you're looking for a way to make your next get-together with family and friends more fun, engaging and even educational, ...

The term "involute" refers to the shape of the teeth: the curves of the teeth are involutes of circles, which are curves that optimize gear performance. Figure 1.1.2: The three marked circles are key ...

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