Readers like you keep news free for everyone.
More than 5,000 readers have already pitched in to keep free access to The Journal.
For the price of one cup of coffee each week you can help keep paywalls away.
Readers like you keep news free for everyone.
More than 5,000 readers have already pitched in to keep free access to The Journal.
For the price of one cup of coffee each week you can help keep paywalls away.
EVERY DAY DURING Maths Week, we came up with a little puzzle to wreck your head.
And the scientists of Ireland wanted in. So to celebrate Science Week, which launched yesterday, we have a different brainteaser for you every day this week.
We’ll start you off with an easy one:
You have a string-like fuse that burns in exactly one minute. The fuse is inhomogeneous, and it may burn slowly at first, then quickly, then slowly, and so on. You have a match, and no watch.How do you measure exactly 30 seconds?
Answers will be revealed on Friday. But if you want to start a discussion, feel free to leave your answers in the comments section.
To embed this post, copy the code below on your site