48 Degrees

My newest favourite number is 48 or more accurately arccos (2/3). Other favourite numbers are 5,17, and 309. Although 48 is ten more that the Revolting Cocks song 38, the reason for 48 degrees is explained (mathematically) below, but essentially 48 degrees is the solution to the problem:

A smooth hemisphere with radius, r, is resting in a fixed position on a horizontal plane with its flat face in contact with the plane. A particle of mass, m, is slightly disturbed from rest at the highest point of the hemisphere. Find the angle to the vertical that the particle leaves the surface of the sphere.

Also  this is independent of radius, particle mass and local gravity! Nice.

 

Talk Talk Part 4

My lovely router (a D-Link) started to drop connections and act a little bit funny. I put this down to overheating as I had lost the little rubber feet upon which it was meant to stand. This may or may not have been the cause for its miss-behaviour but that was my diagnosis. So I needed another router and reluctantly I went to the back cupboard and got the free router I received from Talk Talk when I signed up with them. It looks pretty grotty and has a huge Talk Talk logo on the front panel.
So I un-plugged the old lovely router and held my breath. Would the new one work? I plugged it in and turned it on, an on-switch is a luxury. Lights flashed and there wasn’t a whirring sound, the connection light blinked and flashed and went green.
I plugged in, logged in to the router and had a look at the settings. It didn’t look like I could change the SSID! Arrghhh. I don’t want my wireless network to be called Talk-Talk8654. I left it.
Later I loaded the router admin page on the iPhone and suddenly there was a settings page for me to play with. I think there was a refresh issue with the PC browser that meant the settings didn’t show. I have now changed the SSID and am a happy bunny.
I know Talk Talk are slammed in public relations but I have to say I have had an excellent service from them! Please remember that anecdote isn’t evidence!

Spitting on my Hand

When I first moved away from home and to university I ended up spitting on my hand and arm a lot. It took me quite a while (about a month) to figure out what was going on!

At my ancestral home the basin in the bathroom has two taps. Nothing unusual there but the problem was that the cold tap was on the left and the hot tap was on the right of the basin. Now, I’ll pause while you go and check your taps.

I’m left handed and so brush my teeth with my left hand. Not unusual again. My left-handedness is a bit tempremental as I eat whichever way around suits the food on the plate and I play most sports with my right hand. Anyway, I would brush my teeth and then spit while I was rinsing the toothbrush – left hand holding the toothbrush under the cold tap on the left of the basin leaving the sink bit clear into which to spit.

In 1991 I head off to college halls and move away from home for the first time. I stayed in Falmouth-Keogh Halls of Residence in the glorious Southside building. It is no more, they snuffed it! The taps on the basin in my room were, what I now understand, to be the correct way around. The cold tap in on the right and the hot tap is on the left. I do not know where this convention came from but I find it interesting.

When I brushed my teeth for my first month at college I ended up spitting on my hand. I would put the toothbrush to rinse in my left hand under the cold tap on the right of the basin and automatically spit into the basin at the same time as I had been conditioned to do so after living at the ancestral home for 11 years. This created a dilemma and I had to re-learn the timings of what to do and when whilst I was brushing my teeth. It took a while and in the 21 years since I headed to sunny South Kensington I have coped very well with taps the wrong way around, the correct (?) way around and also mixer taps!

A Bit Cold

This is an epic fail. I know Manchester is shitty but I think this is a bit wrong!

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Perhaps it’s getting back for the BBC move to Salford or most likely the number was an accident. Humans are fallible and so any counting or typing procedure can’t be 100% accurate!

Weather Happens

So, the snow that had been forecast for about a week has arrived. There’s about 8cm in the garden but it’s not good for snowballs. Looking forward to taking number one son out later. Probably do some sledging.
First thing on the news was the chaos that the snow brought! Now, we generally have about 2 or 3 days of snow a year. There’s no reason for us to be used to it and no reason for everything to work once it does snow. Other countries are more organised because they have weeks or months with snow on the ground and have to live with it. We don’t, so there!

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