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Artificial intelligence has helped design an invisibility cloak. The cloak could hide communication devices from detectors that use microwaves or infrared light Technology 10 November 2022 By Karmela Padavic-Callaghan ...

Artificial intelligence has helped design an invisibility cloak. The cloak could hide communication devices from detectors that use microwaves or infrared light Technology 10 November 2022 By Karmela Padavic-Callaghan ...

A kid rides a bicycle to power a Christmas lights installation in Budapest, Hungary, on Nov. 28. MARTON MONUS/Reuters A bicycle pedalled by passers-by powers up a Christmas tree-shaped light installation in Budapest, as the local mayor applies sustainable technology to celebrate the festive season while saving on surging energy costs. The tree only lights up fully while someone keeps pedalling really hard, which encourages families with their kids to stop and give it a try. The bicycle also charges a battery that, along with solar panels, powers up the rest of the lights around the Budapest square. “One the one hand, we keep moving in this cold weather. On the other, we can experience how much one needs to pedal to light up a six meter-high Christmas tree decoration,” said Gergely Orsi, the mayor of Budapest’s 2nd district. “For us, it shows an example that sustainability is the future.” His municipality decided to cancel most of the usual Christmas light decorations this year due to...

A computer that uses light rather than electricity to transmit and manipulate data could carry out the same tasks faster and using less power Technology 9 December 2022 By Matthew Sparkes Yi Zhan...

Photo : imging ( Shutterstock ) Whether multicolored or classic white, a few strands of holiday lights can make pretty much anything look festive, both indoors and outdoors. And while the strings of small bulbs have a longstanding reputation of being annoying and difficult to work with—which can sometimes lead to accidents—they also carry other safety risks. Here’s how to enjoy Christmas lights without anyone or anything getting hurt. Christmas light safety tips Christmas lights may look harmless—with their cheerful colors and twinkling modes—but don’t forget that you’re still dealing with glass and electricity, and accidents can happen. Here are a few ways to avoid them: Carefully inspect strands from previous years If you’re reusing holiday lights from previous years—which you should if you have them—be gentle when you take them out of storage. Before putting them up, take the time to do a quick check of each strand, making sure there aren’t any broken bulbs, frayed (or bare) wi...

Photo : Olga Savina ( Shutterstock ) Menorahs can get messy. And o n top of whatever dusting you need to do for a decoration that spends most of the year in a box, candle wax is just a pain to clean up. Here’s how to clean all the different kinds of menorahs. How to clean silver menorahs Per Kosher.com , you can de-wax a silver menorah by putting it in the sink and pouring boiling water over top of it. Use a soft sponge to add some silver polish when you’re done, then a second sponge to clean it all with dish soap. Rinse it with hot water and dry it with a cloth. (You can also boil it in the water on the stove and just let the wax melt off and rise to the surface, where you can easily skim it off, but your menorah might be too big.) Before doing this, of course, plug your drain or lay down some tinfoil. Don’t remove the tinfoil and wax until the water has cooled down enough for you to touch it. When it’s time to store the menorah after Hanukkah, put it in a tightly-sealed plastic...