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Mike Stewart] powers up a thrust meter from an Apollo lunar module. This bit of kit passed inspection on September 25, 1969.

December 31, 2025 • A few years back, many politicians were raising the alarm about the dangers of "CRT" in schools. Today, the new risk to public education is "DEI." What do both of these moments ...

Some Windows users are seeing an error in Device Manager or DXDiag of Windows 11/10 that says: Windows cannot verify the digital signature for the drivers required ...

A portable practice set in a case used for teaching telegraph and wireless operators Morse code. Spring-operated motor with winding crank on right side. A punched-paper tape is pulled around a spindle ...

Abstract: Smart meter is responsible for producing a large volume of energy consumption data and therefore data compression can be an useful tool for compressing such data sets. As smart meter is ...

Abstract: This paper analyzes the measured broadband signal echoes modulated by digital coding metasurfaces (DCMs) and concludes that the non-ideal broadband modulation results are related to the ...