optical

Hitler, as the cliché goes, built the autobahns, and Nazi Germany developed technologies like synthetic fuels, optical equipment and space flight that were ahead of the Western democracies.

Using optical and electron microscopy, Harris and his team determined the rock was a chondrite - the most abundant type of stony meteorite, according to Nasa - which meant that it was approximately 4.56 billion years old.

Here, the Russian naval vessel appeared again in radar-based and optical satellite images, allowing us to confirm once again that it was a size and shape which matched the Boikiy.

Newly released optical satellite imagery from Maxar shows the clearest picture yet of what happened at key Iranian nuclear sites at Natanz and Isfahan.

According to the research paper, the participants looked into a device called Oz which consists of mirrors, lasers and optical devices.