Word wave puzzle no.2

Can you guess the word in this puzzle, which relates to a recent Physics World feature?

Here’s how the game works:

1. Enter a word guess – in this game the word has six letters.

2. After submitting your guess, each letter in the guessed word is coloured to provide feedback:

   • Green: The letter is correct and is in the correct position in the target word.
   • Yellow: The letter is correct but is in the wrong position in the target word.
   • Grey: The letter is not in the target word at all.
3. Using this colour feedback, refine your next guess.
4. Continue guessing until you correctly identify the hidden word(s) or run out of attempts.

If you need any hints, read this recent feature article.

Fancy some more? Check out our puzzles page.