Timekeeping. How could such a mighty power be exploited by a device as diminutive as a quartz wristwatch, to a remarkable degree of accuracy? Today we will break open one of said watches (through writing, of course), and see what lies inside.
It’s currently the summer holidays, and we must follow in the steps of the ‘cool’ kids and go outside and ‘socialise’ (pfft what is that?). That means, of course, that we see a screening of Finding Dory.
I will bravely assume that any electrical apparatus in your household does not have a 100% energy efficiency, i.e. the useful energy you obtain is less than the energy you put in. It is obviously preferred to have 100% efficiency because not only do you get more out of your money, but it also saves more fossil fuels, a finite resource. Energy inefficiency is an issue that has plagued the civilisation for centuries, and scientists strive to find ways of obtaining maximum efficiency wherever possible.
In February earlier this year, Yanhao, a few other people and myself attended a national physics competition (ooh I know, fancy) in London hosted by the Weizmann Institute of Science. This competition required the teams to design and build a safe which would be able to be cracked using various physics principles. For example, the ‘crackers’ may have to construct an electromagnet using various materials in order to attract an object, and this could open the safe or something.