Ever get that feeling when you’re in a field and there’s a sleeping cow and you’re trying really hard to push it over but it just won’t budge? No matter how much you try the cow just remains stationary? Yeah I get that a lot too. You think to yourself, “Perhaps I’m just too weak” and walk away, relatively disgruntled.
Tomorrow we are celebrating the day of another mathematical constant! Huzzah!
At the moment I write this post my eyes are swollen, my nose is itchy and leaking, my floor is littered with crumpled up tissues, and I lay in my bed squinting at the brightness of the screen. I reach over to my bedside table to grab another tissue but… disaster strikes. There are no more. An oozy sneeze escapes my mouth, mocking my misfortunes. Oh, how I do love summer. Why is it that at this time of the year so many people mutate into snotty, swollen creatures? It seems like some kind of cruel practical joke so that we unlucky few are unable to fully enjoy our summer vacation.
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.
Since the dawn of civilisation, humans have had the necessity to give value and quantity to physical measurements made in the natural world for ease of communication and understanding. For example, the passing of time can be quantifiable by assuming that it is constant, or an object can be ‘weighed’ by its mass relative to another object. For each of these quantifiable aspects of our world, we have created a unit which is used to describe the magnitude or quantity of that measurement. We are currently aware of seven quantities which we are able to measure, and from which we can derive the measurements for all other quantities.