Quick Twitter Rant on Terrorism Hysteria

As promised to my good friend Lev Lafayette on the tram back from the last Linux Users of Victoria meeting here is my brief rant on terrorism hysteria sparked off on the 26th May by a tweet by Emily Lakdawalla mentioning an article about Kiera Wilmot’s situation written by Kiera herself.

Please read about where this #terrorism hysteria is leading us: RT @elakdawalla: Kiera Wilmot’s own words: http://www.aclu.org/blog/[…]

Fear is one of the most disabling afflictions we can have and it’s almost as if western society is craving it.

We make prisons for ourselves in our minds, voluntarily sacrificing liberties for illusionary security whilst paying for the privilege.

We arrest and almost criminalise a 16 year old girl for a class chemistry project gone wrong then wonder why society stagnates.

We now return you to your regularly scheduled funny cat videos and Farmville. Nothing to see here, be happy in your virtual cocoon

Not that Australia is that much better, we have our own hysteria about asylum seekers to deal with.. 🙁

Poetry: Episodes

Another in the series of writings for the Equal Writes writing group in Belgrave, this one was on the topic of Episodes and is vaguely (OK, more than vaguely) autobiographical.

Episodes in my life

Growing up in Cardiff

City streets, city parks,
Trips to the Brecon Beacons.
Roman roads, standing stones,
faint echoes of the Mabinogion.

Autumn holidays in Pembrokeshire
Where Parry Thomas and Babs broke records,
and one sorry day, full of cold,
Babs broke his life.

University in Aberystwyth

Wyt ti’n siarad Cymraeg?
Not really.
Welsh, but not speaking Welsh.
In this Welsh University town.
Trying to learn the lingo but blocked,
timetable clashes and moved lectures.
Physics and maths getting in the way.
Instead I found computers,
almost lost a degree,
but found a new occupation.

Working in Great Malvern

Running computers for developers,
in the place where RADAR was developed,
to see in the dark.

During a war where computers first came to life,
to break codes,
to see into the enemies mind.

Later, working in computer security,
to keep the black hats out,
and keep the white hats safe.
Our own hats a lighter shade of grey.

Migration to Australia

Just married to an Aussie,
in the middle of the UK.
Our honeymoon is down under,
living in Cockatoo,
and an introduction to wonder.
New birds, animals, and mosquitoes.

A year passes and another trip,
and this holiday a decision is made
to leave the old country and try
something new.

Both of us migrants now,
me for the first time,
her for the second,
both taking a big leap together,
catching each other,
at the end of the red eye.

Writing: Snake

Quite a while ago I said I was going to put up the writing I was doing for the “Equal Writes” group at the Belgrave Library. Er, well I forgot. 🙂 So here’s the one after the last one I blogged, and I’ve now got a backlog to get through. 🙂

The word for this one was just “snake”, so I tried a short poem with some prose as a follow up about snakes.

Snakes are an odd creature
Lacking ears they cannot hear as we do
But bodies sensitive to movement detect our steps
Perfunctory, unworried, receding
Oblivious to its presence hidden in the grass

Snakes are reptiles that have been around in for one form or another for around 100 million years. Their evolution is unclear with two main theories, one being that they evolved from digging reptiles that benefited from gaining the scales over the eyes and from losing their ears – the other that they arose from a group of aquatic reptiles called mosasaurs which evolved into creatures resembling modern day sea snakes. Whilst it used to be that the mososaur theory was better supported by discoveries new DNA evidence does not show a close relationship of snakes to monitor lizards (known to be descended from mosasaurs) and the discovery of a fully land-living fossil (Najash, a name derived from the Hebrew name for the serpent in Genesis) complete with rear limbs seems to have turned the tables for now.

They are a very successful creature with species occuring on all continents, except Antartica, and range in size from the tiny threadsnakes which can be barely 10cm long to the massive constrictors such as the reticulated python and the anaconda. The largest snakes that ever lived are now extinct though, with Titanoboa currently holding the crown at around 12m-15m long (and also likely the heaviest so far).

Whilst all snakes are obligated carnivores (they can only derive some nutrients they need from meat) most species are not venomous, relying on either ambushing their prey and killing with constriction or simply eat it whole (which can be relatively easy if your prey are eggs, not known for their running skills). Of ourse being able to tear your prey up has its downsides, you must swallow it whole so they have evolved very complex jaw arrangements to allow them to consume prey larger than the diameter of their head. They don’t dislocate their jaws though, that is very much a myth.

As snakes occur pretty much anywhere humans normally live they have woven their way into our cultures. Egyptians used the image of an Egyptian cobra as the Uraeus, a symbol of royal power and of the goddess Wadjet, most recognisable on the gold mask of Tutankhamun. Serpents make many appearances in the Bible and that follows through into Christian mythology with St Patrick winning renown for casting the snakes out of Ireland (whereas snakes had never colonised it in the first place) as well as the “snake stones” of Whitby Abbey. According to legend St Hilda wanted to build an abbey at Whitby but was frustrated by the sheer number of snakes occupying the area. She prayed and they were all turned to stone, allowing her to build the abbey. After that time people kept finding stones shaped like coiled snakes, but without heads, which was apparently the result of a beheading curse from St Cuthbert. A roaring trade in these relics sprang up with some enterprising craftsmen thoughtfully providing the heads they had lost by carving them into the stone. Ironically what was being found there were not the unlucky snakes but the remains of much older animals, ammonites, the fossil remains of extinct molluscs which gave rise to the present day nautilus. There is now one species of ammonite named after St Hilda, “Hildoceras”.

When Whitby’s nuns exalting told,
Of thousand snakes, each one
Was changed into a coil of stone,
When Holy Hilda pray’d:
Themselves, without their holy ground,
Their stony folds had often found.

– Sir Walter Scott – “Marmion”

A new cat

Well, OK, more a kitten than a cat.. 😉

We felt that our adult cat Mini needed a companion and a bit of research indicated that for an adult female a male kitten would give the best chance of a good match. So it was off down to the RSPCA to talk to them about what was possible, and we found they had 3 kittens of which one was male, and he had only just arrived after their internal quarantine and was lovely, so we picked him. Then we hit a hard question – we had to do the registration form for the council and that demanded a name! We were stuck, but then it occurred to us that given we had an adult called “Mini” the obvious choice was going to be “Maxi”.

So meet Maxi Samuel!

Maxi, our new kitten, looking very innocent.

He’s remarkably well camouflaged in our house, though that’s not been a problem for him yet.. 😉

Maxi, our new kitten

Melbourne Partial Solar Eclipse, May 10th 2013

This morning was a partial solar eclipse in Melbourne. Back up where we saw the total solar eclipse last November they got an annular eclipse which would have been spectacular, but work is too frantic at the moment bringing up a new machine to even think about going up!

The first glimpse of it was from the train going into work with (of course) eclipse glasses (from Ice In Space) and by the time I got to Richmond I remembered I’d not taken a photo so had a go with my phone and the eclipse glasses and came up with this:

eclipse_train

My plan though was to go to the playing fields at the University of Melbourne where I’d learnt before (via Twitter) that there would be some astro folks. There was a small group of people there with a telescope set up to project onto a screen at the rear who were having fun trying to keep it on target as it wouldn’t lock into place. The nice thing about projections like this is that you get a nice big image, like this:

Melbourne Partial Solar Eclipse, 10th May 2013

I had a couple of left over eclipse glasses from the total eclipse so I passed them around and left them with them, they seemed to go down well!

August 1993 “Preliminary Hardware Configuration for a Main Service Linux Machine”

From 1992 through to 1994 I was working at the Computer Unit at the University of Wales (well, wrangled an “Employment Training” position there on my own initiative) as a sysadmin and was running Linux on an IBM XT (from very dodgy memory). A friend of mine, Piercarlo Grandi, suggested to me (semi-seriously I suspect) that you could now build a large enough PC to support quite a number of users, and that the Computer Unit could use it as a central server (they were running DEC 5830s with Utrix), so I knocked up a text file and discussed it with my colleagues. They didn’t take it very seriously – little did any of suspect how much that would change.

Well tonight I indulged in a bit of computer archaeology and managed to get the data off my Amiga hard disk (from a GVP A530 expansion unit) and browsing around happpened to stumbleover that text file, dated 8:20pm on the 8th August 1993. It’s quite touchingly naive in places, and my numbers are pretty ropey.. 🙂

Preliminary Hardware Configuration for a Main Service Linux Machine

Item                            Each    Number          Total

Case                             100    1                 100
Keyboard + Mouse                 100    1                 100
Floppies                         100    1                 100
DAT Drives                       750    4                3000
EISA SCSI Controllers            300    2                 600
Memory (Mb)                       25    256              6400
Pentium EISA Motherboard        1000    1                1000
3.5Gb SCSI-II Disks             1800    5                7000
Screen+SVGA Card                1000    1                1000
EISA Ethernet Card               200    2                 400
CD-ROM Drive                     300    1                 300

                                                        20000

Projected to be able to support between 200-400 users running Linux 0.99.p12
        (Alpha release kernel with patched IP - appears stable)


Notes:

(1) I've seen reports that the ethernet driver code may suffer from a
    memory leak, but I've not seen any evidence for this yet as my
    machine hasn't been turned on for a long enough period for it to
    cause any problems.

(2) As it is so new there is very little commercial software available
    for it, but there is a quite sizeable free software base with many
    of the GNU packages already ported for it, and this is generally of
    high quality.

(3) The Linux kernel is well thought out, and includes support for shared
    libraries (which Ultrix sadly never picked up) which significantly
    reduces the amount of memory applications need.

(4) A Linux box of the size proposed for the service machine has not
    been attempted yet (as far as I know), but ones of the size of the
    proposed testbed machine are already in usage on the Internet. I
    believe that Linux can handle this scaling up with no problem.

(5) There are apparently companies within the UK who sell support services
    for Linux, I will investigate further.

(6) There is already a large amount of Linux expertise on the Internet,
    including the comp.os.linux newsgroup, the linux-activists mailing
    list and even an IRC channel dedicated to Linux users.

This post is dedicated to Rob Ash, my then boss, who took a chance taking me on after my time as a student mucking around on computers when I was meant to be doing my Physics degree, and who was a great mentor for me.

Mount Burnett Observatory (@MBObservatory) now on Twitter

For almost a year now I’ve been a member of the Mount Burnett Observatory, a community project at the old Monash University astronomical observatory at Mount Burnett in the Dandenong Ranges. It’s great fun with both the original 18″ telescope and new 6″ and 8″ Dobsonian telescopes (some thoughtfully sponsored by the Bendigo Bank for education and outreach purposes).

It’s had a Facebook presence for a while, but nothing on Twitter, so after speaking to the webmaster and the president I’ve now set up a Twitter presence as @MBObservatory.

So if you’re into astronomy and around Melbourne (especially the south-eastern suburbs, though we do have people travelling in from quite a way) and use Twitter please do follow us!


Happy Newtonmass All

With just one sleep left to the annual celebration of Sir Isaac Newtons birth on the 25th December I’d like to take the opportunity to wish everyone a very Happy Newtonmas and may gravity not weigh you down too much in the coming new year. 🙂

Summer sunset through the grass

This photo was taken this evening at Cardinia of the sun setting through grass, the choice of where the real horizontal lies is yours.

Total solar eclipse in far north Queensland, 14th Nov 2012

Donna and I travelled up to Trinity Beach, about 20 minutes north of Cairns, for a holiday with a total solar eclipse in the middle of it.

We were really lucky as firstly we nearly didn’t make it up there at all as Jetstar cancelled our flight up and couldn’t get us another seat until Wednesday which would mean missing the eclipse and losing the accomodation we’d booked. Fortunately we were able to get a flight up with Virgin instead on the same day as our cancelled one, but it cost more than the refund from Jetstar. Then there was the weather; we arrived on a nice sunny Sunday and it looked quite promising, but Monday and Tuesday were both pretty cloudy and wet at times, so it wasn’t looking good.

Wednesday morning rolled around and we were up early (with three different alarms, just in case) and it was clearer than the previous days, but still plenty of broken cloud around.

First Contact, Obscured By Clouds #1
First Contact, Obscured By Clouds #2

There were probably a few thousand people around on Trinity Beach…

An audience for an eclipse, Trinity Beach, QLD

…who watched the partial phases nervously, but with growing excitement, through the cloud.

Peek-a-boo #1
Peek-a-boo #2

We were getting close to totality, but a large cloud was looming, and we wondered if we might miss the total eclipse phase!

Audience anticipation - eclipse or cloud?

Our luck held though, and we managed to see totality through broken cloud. 🙂

Totality through the cloud!

Of course, after third contact and the end of totality the cloud started to clear and we had a good view for once.

After third contact - in a clear sky

The folks down in Cairns (including my friend Ian Grant from the Bureau of Meterology who lent me a 1976 solar eclipse filter) were not so lucky, they saw the partial phases but missed totality due to cloud. An American in front of him told him that was the third time in a row it had happened to him!

Video of Total Solar Eclipse, Trinity Beach, QLD – 2012/11/14

This is my attempt to capture the view of the total solar eclipse as seen from Trinity Beach in Queensland, Australia with my D90 DSLR, uploaded to YouTube with a CC-BY license.

Our tripod wasn’t usable unfortunately so this was taken resting on my knee and, as you’ll see, I got distracted by totality so it wandered off target a couple of times. I stopped filming so I could try and take a still photo as it looked like we were about to get clouded out, hence stopping short. We did manage to see the diamond ring just after though!