Interesting Engineering

China lets stealth jets turn enemy radar beams into power with its 6G smart surface

Researchers in China have developed a reconfigurable intelligent surface (RIS) that harvests energy from enemy radar.
The Blogs | The Times of Israel

A Gallery of White – lavan, chivar, and tzochar

Radak in Sefer Hashorashim offers a similar explanation of lavan, as does Rabbi Samson Raphael Hirsch (to Ex. 5:7 ).] Our ...