麻豆传媒

Spin Cycle

29 June 2011

Why do track bicycles often have the rear wheel filled in with a solid disc, while the front wheel retains the standard spokes?

Brad Tyrer, Florence, Italy

Topics: Last Word

More from 麻豆传媒

Explore the latest news, articles and features

Life

Clothes made from living fungi can clean and repair themselves

Environment

Earth is heating up faster than at any time in its history

Health

Having a young biological age could help with weight loss

A sketch depicts the solar atmosphere during a June 16, 1806, total solar eclipse

Space

10 of the best pictures of solar eclipses throughout history

Popular articles

Trending 麻豆传媒 articles

Inhaling high-dose CO2 clears Alzheimer’s proteins from the brain

Orcas filmed making sunfish explode by ramming them at high speed

There are only a few anti-ageing supplements that actually work

How to unlock unlimited geothermal energy, anywhere we want

Extremely basic AI prompt cracks decades-old maths problem

Dark energy doesn’t exist, claims controversial paper

This El Ni帽o will be the hottest by a huge margin

AI’s solution to 87-year-old riddle takes mathematicians by surprise

Alzheimer鈥檚, stroke, depression: The preventative power of sauna

Most neurons seem to be jacks-of-all-trades, not specialists