Lionel got in touch to ask us about a curious phenomenon he's noticed since installing a new sensor, raising the question whether our brains process light or sound faster. Eva Higginbotham spoke with Brian Moore of the University of Cambridge who helped us unpick the answer...&amp;#160;&amp;#160;&amp;#160; Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a> Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Why do particles gather in a bucket's centre?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...