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September 22, 2021 Archives

Wednesday, September 22, 2021

TRACKING WITH CLOSEUPS: Graveyard of Empires—The 1842 British Retreat from Kabul

Posted at 14:44 Permalink

CONTINUITY: Dishwashers Again! Prewash Cycle and Why Detergent Tablets Are Expensive and Suboptimal

Posted at 13:00 Permalink

CONTEXT: Extreme Ultraviolet Lithography for Semiconductor Manufacturing, Parts 2 and 3 of 3

Concluding the series on the optical train of an extreme ultraviolet (EUV) system for exposing semiconductor wafers which began with Part 1, Part 2 discusses the properties of state of the art production lithography machines.

Part 3 explores how components of the optical train are manufactured to such demanding precision.

Posted at 12:41 Permalink

CONTEXT: Osaka's Sinking Airport

The sea isn't rising—the (artificial) island is sinking.

Posted at 11:15 Permalink