What is a voltaic pile?
Volta placed copper disc and a zinc disc, separated by some saltwater. When connecting the two discs with a wire, a current would flow! Why?
I just released Vidrio,
a free app for macOS and Windows to make your screen-sharing awesomely holographic.
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Vidrio makes your presentations effortlessly engaging, showing your gestures, gazes, and expressions.
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More by Jim
- Your syntax highlighter is wrong
- Granddad died today
- The Three Ts of Time, Thought and Typing: measuring cost on the web
- I hate telephones
- The sorry state of OpenSSL usability
- The dots do matter: how to scam a Gmail user
- My parents are Flat-Earthers
- How Hacker News stays interesting
- Project C-43: the lost origins of asymmetric crypto
- The hacker hype cycle
- The inception bar: a new phishing method
- Time is running out to catch COVID-19
- A probabilistic pub quiz for nerds
- Smear phishing: a new Android vulnerability
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