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Walmart is selling a 'handy' $50 electric screwdriver set for $26, and shoppers say it 'has great battery life'
Whether you've got a new toolbox to fill in your garage or a Father's Day gift to shop for, you're in luck: Walmart is selling the $50 Fanttik E1 Pro 3.7-Volt Mini Electric Screwdriver Set for almost ...
Researchers develop compact superradiant Smith-Purcell device with ultra-narrow linewidth
Superradiant Smith-Purcell radiation (S-SPR) is a kind of free electron radiation with a train of free electron bunches ...