With the London Marathon this Sunday, everyone’s hard work and training will come into place as they take on tremendous challenge of 26 miles around the capital. It’s time to lace those trainers, plug in the ear phones and keep those legs motoring!
Find out about British Science Week and how you can get involved!
Science is in the air as British Science Week 2017 gets underway! From the 10th – 19th March, a ten-day celebration of science, technology, engineering and maths begins with schools, science enthusiasts and professionals getting involved in a range of events across the UK! Here is everything you need to know…
In this article, we are going to show you how you can create the simplest (possibly), but by far the most awesome (definitely) DIY electric train by using nothing more than a battery, some bare copper wire and two magnets. Before you stand aghast in disbelief and tell us it can’t be done, make sure you check our article on how to make a basic electric motor with almost identical materials.
Christmas is fast approaching and it’s the time of year when we risk life and limb to retrieve the old Christmas decorations from the back of the shed or that store cupboard that nobody ever seems to go in from January to November. While we can’t help you untangle the entwined mass of tinsel or figure out why the perfectly functioning lights of last year won’t now work, we can help make putting up your decorations much easier.
At first4magnets, we recently got hold of some super slow motion cameras. Naturally. after having fun using them to film large neodymium magnets squashing things in 2000 frames per second, we thought it would be interesting to shoot a permanent magnet Gauss rifle in slow motion and explain how one works…
Google, the name synonymous with cutting-edge technology, introduces a new exciting platform, Google Cardboard. No, the Internet gurus at the Googolplex have not decided to diversify into origami, in fact they have developed a device that can be made out of cardboard (and a couple of magnets) that makes virtual reality affordable and accessible for anyone with a smartphone. In this article, we take a look at what all the fuss is about.
A reed switch is an electromagnetic switch used to control the flow of electricity in a circuit. They are made from two or more ferrous reeds encased within a small glass tube-like envelope, which become magnetised and move together or separate when a magnetic field is moved towards the switch. The switch effectively works like a gate, or a bridge, in an electric circuit so when the two reeds are in contact, electricity can flow around the circuit operating a device. Unlike mechanical switches they do not require something or someone to physically flick them on or off, they are controlled completely by invisible magnetic fields! Continue reading
Magnets are fascinating – there are many things about magnets for which the only explanation seems to be magic! The best place to find out about magnet-related phenomena is of course here, on our blog – and YouTube. The most viewed videos showing super-strong magnets falling through copper pipes alone have amassed an incredible 8 million views and counting.
What you are seeing in these videos is of course a demonstration of eddy currents in action. Here we will explain what is going on.
The Earth behaves like one large magnet; we know this for certain because of the visible effects on a magnetic compass by the Earth’s magnetic field. In 1600 William Gilbert was the first physician to publish his findings on the Earth’s magnetic field and a hypothesis for its origin in his book titled de Magnete.