We dug through thousands of Prime Day deals to find 60 standouts for $50 or less

If you want a speaker to stash on a backpacking trip, JBL’s Go 3 is a great choice for $27.95 ($12 off) at Amazon. It plays ...
Amazon S3 on MSN

DIY MrCool Ductless Mini Split Install Guide

Can't-Miss Play: 99-YARD TD! Devin Lloyd's pick-six vs. Mahomes is longest play of 2025 so far The first supermoon of 2025 is ...
Hackaday

Pulling A High Vacuum With Boiling Mercury

If you need to create a high vacuum, there are basically two options: turbomolecular pumps and diffusion pumps. Turbomolecular pumps require rotors spinning at many thousands of rotations per ...
IEEE

System-Level Energy Management Optimization Based on External Information for Power-Split Hybrid Electric Buses

Abstract: In recent years, the improvement of fuel economy in power-split hybrid electric buses (PS-HEBs) has emerged as a prominent subject of discussion. This article introduces a system-level ...