You're not putting that in the garden...

So… here we are: the end of an era.  Tomorrow is my last day working for Atkins Consultants Limited.  Monday 2^nd July 2001 – Friday 19^th November 2010: eight months shy of a gold effect carriage clock for my non-existent mantelpiece.  I’ve had some good times working at Atkins and I’ll be forever grateful of the fantastic opportunities afforded to me over the past nine years or so.

Now I can look forward to lots of free time in which to cycle plenty of miles and walk many paths.  It will also be nice to leave behind The Worst Commute Ever: Tuesday was my last day of being on the bypass stuck behind Reg and Doris in their 15yr old Proton or Baz in his dangerously overladen P reg Mondeo with illegal tyres.  How on Earth could I have found the Monday morning drive-fly-taxi to Dublin LESS hassle than the drive to Barnsley?  By factoring in Reg, Doris, Baz and the Tickle Your Tastebuds van; that’s how.  But let us not dwell on the past or be concerned about the future; we only ever occupy the present.

Birmingham Airport is auctioning a Maglev carriage on ebay.  The carriage is an example of one of the world's first magnetic levitation transport systems.  Although the Birmingham Airport one was replaced by a cable operated system, there are still plenty of examples of Maglev transit systems around the world.  The theory behind it is relatively straight forward; I won’t go into detail (you can Wiki if you’re interested), but the technology basically exploits magnetic repulsion and attraction.

I couldn’t resist a sly laugh at the expense of ‘Airport spokesman John Morris’ who was quoted: “Although it will never move under its own power again, it could make an excellent summer house or greenhouse.”  I can just imagine John walking through the door one evening (or morning – he’s probably on a shift pattern) after work and proudly telling Mrs Morris that he’s “bought a summer house ready for next year; it’ll be great for barbecues”.  Her face would be a picture when reality dawned on seeing a Sixt Kenning flatback Transit van loaded with half a ton of mildewed fibreglass, perspex and steel.

Interesting concept, centripetal force…

Consider a body travelling in circular motion of radius, R, about a fixed origin with a linear velocity, V.  The body is constantly accelerating toward the origin with an acceleration, a.

a = Rw², where w is the angular velocity of the body.

Linear velocity, V = Rw.

Newton’s 2^nd Law tells us that Force = mass x acceleration

So the centripetal force, F = m x Rw²

(V = Rw, so w = V/R.  Also: Weight, W = mass x gravitational acceleration, so m=W/g)

So the centripetal force, F = WV²/gR

… circular motion and acceleration don't really have anything to do with magnetic levitation.  But it was on my mind.

Thanks for reading.