It is educational and it tastes good, too. [Science with Screens ... he dipped the crystal in vinegar and then sealed the crystal in mineral oil. This isn’t the first time we’ve looked ...

NASA’s Perseverance rover, with help from QUT scientists, has uncovered layered evidence of ancient water activity beneath ...

The essential components were a fragile fine wire (the 'cat's whisker') acting as an aerial connected to a small piece of mineral crystal such as galena, which received and converted the signal to ...