Photonic space-time crystals enhance light interaction and amplification, offering new applications in optical information processing. Photonic space-time crystals are advanced materials designed to ...

Yes, time is linked to space, and time is the fourth dimension. If so, can one travel in time back and forth just as with space? Even before Einstein, the hypothetical concept of travelling into ...

Vicki explains to Steven that TARDIS stands for ‘Time and Relative Dimensions in Space’. This is the first time that ‘Dimension’ became ‘Dimensions’. The Doctor and Vicki are surprised ...

For the episodes of this serial, the story title, author credit and episode number were shown after the main title sequence and over a film montage of real volcanic eruptions. The transformed ...