The Vacuum Tube’s Forgotten Rival

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Made by coiling a wire several times around an iron core, magnetic amplifiers worked using saturation. By passing a small direct current through it, the iron core could be forced in and out of saturation. In a saturated state, it would allow AC current to pass through, otherwise, it blocked it. Although central to Germany’s WW2 military hardware, like the V-2 rocket, magnetic amplifiers were largely too inefficient to use until the 1950s, when the Germans created a pure fifty/fifty nickel-iron alloy that made them more compact, efficient, and reliable. Read full article here

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Electrical Muscle Stimulation Takes The Work Out Of Your Workouts

Growing stronger and losing weight without putting in the effort seems like a fairytale, right? Electrical muscle stimulation might make the dream come true. During EMS, a full-body suit sends out electric charges that stimulate your muscles as if you’ve actually worked out. Older people, in particular, are reaping the benefits. Since they can’t do traditional strength training anymore, EMS is a viable alternative that keeps them healthy and strong. Some evidence suggests that the benefits go beyond strength training; EMS seems to promote cell growth and slow down the ageing process! Read full article here

Business

Billboards, Mailers And Guerilla Tactics: How Old-School Marketing Is Making A Comeback

Billboards make a lasting impact on the general public, more than most digital advertising options. As a result, they’re making a comeback! One company has gone beyond returning to the tried-and-tested marketing medium. Blip blends the impact of a billboard with the digital age. It shows a rotating selection of ads in major cities through their large displays. Best of all, companies can see an estimated impact before they commit; Blip calculates the estimated impressions based on the ad’s frequency, length, and crowd size. Read full article here

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