Squeezing down narrow chimneys, moving around without being seen or heard, and delivering presents to 700 million children in a single night – it all sounds impossible.

So how does Father Christmas do it? One physicist believes she has an answer – and Einstein is the key.

Dr. Katy Sheen, from Exeter University, calculated that Santa and his reindeer would have to travel at about 10 million kilometres per hour to deliver presents to every child expected to celebrate Christmas in 31 hours, taking into account different time zones.

And according to Einstein’s theory of special relativity, objects travelling at high speed become compressed in size. This means Father Christmas would shrink, allowing him to fit his bulging belly and his huge sack of presents down chimneys, Dr. Sheen said.

He is also able to move around unseen because light waves get squashed at high speeds. This means that Santa – moving more than 200,000 times faster than Usain Bolt, the world’s fastest man – would change from red to green, appearing as a rainbow-colored blur. At his top speed, he would become invisible to the human eye.

Einstein’s theory could also explain why Father Christmas appears not to have aged – because relativity means time slows when an object moves at high speeds.

Dr. Sheen came up with the explanation after she wrote a letter to Father Christmas when she was seven asking why he never got older. She received a response saying it was ‘all magic’. But the budding scientist wanted a more rational explanation – and has offered one herself 26 years later.

As well as providing a useful answer for parents whose children ask them about Santa, Dr. Sheen hopes her theory will inspire youngsters to take an interest in physics.

The scientist, who calculated how fast Father Christmas would have to travel by working out the number of households likely to celebrate Christmas around the world and the number of children likely to be in them, will present her theory to children at the Science of Christmas Festival in Exeter.

She said: ‘How does Santa manage to reach these phenomenal speeds? Well that’s magic! However, he would certainly need a lot of fuel – so don’t forget his glass of sherry, a mince pie or two and some carrots for the reindeer!’


Source: http://www.dailymail.co.uk/news/article-4031170/How-does-Santa-world-Einstein-answer-huge-speed-Father-Christmas-travels-means-shrinks-size-invisible-human-eye.html

December 21, 2016

Santa’s Trip Around the World – How Does He Do It?

Squeezing down narrow chimneys, moving around without being seen or heard, and delivering presents to 700 million children in a single night – it all sounds […]
December 14, 2016

Sugar Consumption’s Effects on Your Teeth

The holidays have arrived, and that means lots of sugary treats are going to be consumed at holiday parties and gatherings. After a holiday, most of […]
December 7, 2016

Amalgam vs. Composite Pros and Cons

By the time you reach adulthood, there’s a fairly good chance that you’ve received at least one filling in a tooth because of tooth decay. Yes? […]
November 23, 2016

Making a New Year’s Resolution You Can Keep

A New Year’s resolution is a promise a person makes for the New Year. Regardless of what resolution you commit to, the goal is to improve […]