Saturday, 2 August 2008

Through the eyes of a wild animal: Part 1

The location and structure of the human eyes enable us not only to see how long and wide an object is but also to see how far away it is from us and how thick it is. If we had 2D vision (like what you get when you close one eye and look through the other) we would still be able to see objects clearly but judging the distance would be a problem, so we would look rather clumsy trying to grab things that are further beyond our reach.

So for this reason nature has decided to give the natural predators/ carnivores the ability to see in 3D. Or else finding something to eat would be quite a challenge! Thus most of the predators have their eyes located at the front of their head, a feature of 3D or stereoscopic vision. So think of the big hunters like the tiger, cheetah, leopard, lion (lioness rather), wolf, hawk (more or less), bear, owl etc. all of these have their eyes located at the front of their heads. This gives them the ability to judge the distance to their food and pounce upon it at the right moment.




awww.......... purrr

And what about the prey? the hunted? Well, as far as they are concerned they would rather prefer to have the ability to scan a wide area than be able to see in 3D. Because ill judging the distance to the grass patch is not going to be fatal, but not being able to see the hunter creeping up from behind is! Therefore most of the hunted animals have their eyes located on either side of their heads giving them access to a panoramic view. Deer, antelope, horse, zebra, goat , sheep, buffalo and the like. These animals can only see in 2D, but they have a wide field of view almost close to 360 degrees enabling them to spot any suspicious activity around them.


Eyes focused on the grass


But of course nature is pretty diverse. And there are very many types of visionaries and all of them can't be categorised into these two classes. But at any time in your life if you do find some unidentifiable wild animal charging towards you, and if it has got its eyes at the front of its head, you are in deep trouble!

And what about us humans? does this mean that we are born predators? Well I'm not an expert in natural history but if you ask one he or she would probably argue that this has to do with humans being descendents of apes, if you believe in Darwin that is (the natural historian not the blogger). So for our predescessors it was vital to be able to judge the distance to the next swingable tree branch (I just made that word up I think). So we humans inherited the 3D vision due to this reason.


So you could say we were born to be Tarzan!

Monday, 21 July 2008

A Bird's Tale

Reading Gallicissa's blog reminded me of an incident that took place about 3 years ago.

Setting: Sri Lanka, parent's home

It wasn't just once when birds searching for a place to make a nest to raise a family decided the best location for the new house was on a Ficus tree in our courtyard, inside the house. The parents-to-be would come into the house, inspect the location, the tree, all the branches and all the while talking with each other (trying to make a decision I guess) and then leave, after about 2 or 3 inspections, they would decide whether they are going to build the nest or not.

The first time someone decided that a high-up branch on the tree is the best spot were a couple of Kondayas (apologies for not knowing the real or scientific name of these birds, maybe Gallicissa can help!).

They built the nest and laid the eggs. There were 3 small eggs with brown spots. We could conveniently see into the nest from the second storey. We watched as the parents took turns in hatching the eggs, and going out in search of food. We watched as the eggs hatched and two teeny weeny pinky babies came out. The third one was a bit late, but eventually did manage to squeeze out. We watched as they grew feeding on whatever their parents brought home.

And then one fine day the little ones decided that it was time to stretch their wings. This was quite an exciting and anxious time, not only for the parents but even more for us, because just a few feet away from the foot of the tree was the fish pond. And then there was good old Bingo. Dogs are not generally interested in a bird for a meal, not even for an afternoon snack for that matter, but anyone fluttering around in 'his' house becomes his problem, so was a bit scary. And then there was the stealthy kitty cat, always choosing the most inappropriate times to show up.

So the little birdies took to the sky...... or more towards the ground. They would fly as far as their little wings would carry them........like a few centimeters at a time. Then they would sit on a low hanging branch of a plant, sometimes on a fern just over the edge of the pond (gulp!) and rest for about an hour before finally gathering up the strength to do it all again! The bird parents were behaving like any normal Sri Lankan parent would when their little ones first start moving around.......screaming, or rather chirping at high frequency and running behind the little ones excited and nervous at the same time. And whenever it seems that the babies were having trouble getting back to the nest, the mother or the father would demonstrate how it should be done, over and over again until the little birdie made the attempt.

This drama went on for a few days, quite nerve wracking for us knowing the potential dangers lurking in the vicinity. Fortunately everything went according to plan. Once the babies had had enough training the parents led them out to see the wide world. They flew up to the window, sat there for what seemed like ages, and finally made the move. The younger sibling, who seemed a bit smaller and backward than the others took a few more hours in mustering up the strength, but he (or she) too finally joined the others. The parents were heard making quite a racket outside for a while.

A couple of days later I spotted three Kondayas on the bird's eye chili tree (their favourite fruit, I think) and I knew it was them because one seemed a bit smaller than the other two. And they seemed to be happy, and it was really nice to see them doing well in bird society!

However not all bird's tales have a fairytale ending.

A few months later (or was it a year.....not sure) a couple of kondayas came in to inspect the ficus tree (Deja vu). I'm not sure if it were the same couple, for birds don't have facial features where we humans can distinguish between Tom, Dick and Harry (or maybe more likely chirp, choop and cheep). Anyhow, they built the nest again, and this time there were 2 little eggs. The eggs hatched and two little kondayas came out.

But this time the story took an unexpected turn, the bird mother was most tragically murdered.... the suspect was caught red handed (or feather mouthed) licking its paws and lying on its side quite content with the deed. The cat didn't get any lunch from me that day, he didn't seem to need any either....well, that's what he was born to do I guess.

The bird father had his hands full bringing up two children on his own. The elder one seemed a bit rebellious, for he left the house and straight into the wide world while the father was away gathering food. The father returned to find only the younger child on a plant in the courtyard, so he rushed outside chirping away to look for his other child.
The next day the younger one was seen sitting on the window grill looking into the unknown world out there. He looked quite vulnerable without the mother to guide him out.

Later on the day I was just outside that window, filling in the bird bath under the frangipani tree, when the little guy suddenly decided to make a dash for the nearest frangipani branch. Awwww...

As I watched the little bird sitting on the branch, I could see past him another pair of eyes watching intently. Kurulugoya! (again sorry I only know the names of these birds in layman's terms). It was such a helpless moment....I knew what's going to happen, and I knew I can't do anything about it, but I wanted to do something to save this innocent fellow, but there was nothing I could do....I can't shoo away the little guy for he could hardly fly, I can't stop the predator bird I didn't have enough time to cover ground...And all of these within a fraction of a second. So I watched helplessly as the big bird whizzed in.... like a missile, eyes focused on its target.

Swooooosh!!

Gone!

Wednesday, 16 July 2008

Spam News

I'm doing some experiments today and taking some measurements. In between each set of measurements I have to keep an interval of about an hour for the machine to cool down before I take the next set of readings. I need to take about 5 sets of readings which means it's going to take 5+ hours of the day, and in between those readings what do I do?

First hour or two I managed to finish off tit-bits of other unfinished work, play a game of sudoku, arrange my desktop folders etc. Then I opened my junk mail folder to sort through the junk and to see if some non-junk mail has been wrongly accused by the mail authorities. Fortunately there wasn't any, however one mail title caught my eye

"Afghan bomber kills Bush"
This sudden suppressed laugh/murmer escaped me. Seems the spammers are being creative nowadays. They are probably begining to realize that the old fashioned 'remedies for bodily defects', 'designer wear at low prices', 'free tickets to watch Oprah', 'Winning a lottery ticket in some remote land' and of course 'the death of an unknown relative who left you a million dollars' is now a bit too known to their victims.

So they are coming up with new ideas to get those people to click! And of course who can resist "Afghan bomber kills Bush" I have to give credit to those spammies, that title looks very tempting!

Sunday, 29 June 2008

Pani Kadju!


Crush the cashews


Caremelize some sugar
Stir in the crushed nuts into the mixture
Pour it over a flat surface and cut into squares


Simple as that!!

Wednesday, 25 June 2008

Mrs. Craddock by W Somerset Maugham

Bertha Ley is a beautiful, intelligent and well- refined young lady who falls madly in love with the handsome Edward Craddock, a farmer and a tenant of his father. The objections of her well-bred relatives’ only aids in driving this determined young woman to marry this man who she believes is the only man for her. But the honeymoon ends too soon and Bertha realizes that Edward can’t return her the romantic love she offers him. Edward is a dutiful and rather self-centred gentleman who respects everyone’s wishes in the same way as to those of his wife’s. He has no priority set towards his wife’s requests and sets out to drive two ladies to town while his wife is on sick bed after a still birth simply because Bertha’s request for him to stay at home with her came later than the ladies’ request of driving them to town.

Depressed and bored Bertha sets out to join her aunt in travelling to Rome on holiday only to return to Edward again and again, and find herself trapped in a loveless marriage that she didn’t wish for. Ironically the man who was initially loved only by Bertha but looked down upon by everyone else ends up being loved and highly admired by all but one…...Bertha.

Somerset Maugham takes us into the lives of a handful of characters very different to each other and when brought together inflicts pain and joy upon each other due to their differences in nature, and not because one person is morally better than the other.

Nice read.

Tuesday, 17 June 2008

What goes into a Marshmallow



Heaps of sugar mixed with a little bit of water



A touch of Gelatine for that sticky feeling



Pinch of colour & essence
And a dip in icing sugar for the finishing touch




And loads and loads of air bubbles trapped inside!!

Monday, 2 June 2008

Being Project Manager

When you are in charge of receiving a specialized piece of equipment, doing the site preparation, installation, getting it up and running, and making sure it's doing what it's supposed to do, everything that can go wrong does go wrong! When you've thought through all the necessary precautions and think you've handled them all, you find there's something you missed! When you think that it cannot get any worse, it does! Finally when you think you've worked out all problems, you are proven completely and utterly wrong!!

I'm talking about this new piece of equipment that our research group decided to invest in. Yes it's a great investment specially for my research work. But so far I've been going out of my mind with trying to set it up!

It all started when the dispatch of the equipment was delayed by the manufacturer who's in the UK. Not my fault, but it's pretty annoying when you've got an oblivious agent who has got no idea what's happening, and a 9 hour time difference with the main company!

All the while I was doing the site preparation, like finding a suitable place (negotiating with people who are very possessive of their labs is not too easy either), thinking through the connections, and placing orders for the accessories and fittings, which also gets either delayed or ends up in someone else's mail box!!!(for some obscure reason)! and all the while I'm running around like a headless chicken trying to locate the parcel which had been delivered two days ago!!!

Anyhoo,, at long last the equipment comes in....hooray!! so we gather around and unpack everything, and with a lot of manpower lift up the 70kg unit up onto the trolley/stand that I designed and got custom made for this, only to find that it's sagging under the weight! grrr! I wrote it down in plain English that it needs to withstand at least 80kg!

Then we eagerly rummage through the rest of the package. Lots and lots of accessories, fittings and parts all in a number of boxes......but no instructions manual!!! oh yeah there was one with about 5 pages which said, open the package, locate the pump (as if a 20 kg vacuum pump is easy to miss!!), check whether everything is in order etc etc...........But no instructions as to how to set it up!!!!!!!!!!!!!!!!!!!!!!!!

Unbelievable! They send us a highly specialised piece of equipment which is all disassembled and expect us to try and put everything together!!!???!!@!!

So I write to them and again the 9 hour time difference means I have to wait till the next day for a reply. And the next day I get a reply, with apologies about the shortcomings of the current instructions manual (shortcomings??!!*#&*!) and instructing me as to how some of the pieces fit together...and I said 'some' not all! so again I have to write to them specifically asking them about each and every connection, and I get a reply the next day. And the worst part is we need to set this up really fast, and test if it's working properly before we pay them! and we need to pay them within 30 days! already 2 days down for the missing instructions which wasn't even my fault to begin with!

Ok finally we get all the instructions that we need, and we go about putting it together, only to find that fittings don't fit, joints don't join and their tubes and hoses are not long enough!!!!!!!
Unbelievable!
So I start looking for vacuum hose suppliers, not very many around where I can get a fast delivery, but finally manage to find one and to my relief it's in stock (at least that's what I was told), so should be here in 2 days.
And I get the workshop person to grind, drill and modify the fittings to fit!

Then I find that there's a small issue I overlooked. I was planning to connect the gas tube of the equipment to the gas supply of an existing system, through a simple T connector. I measured the sizes of the tubes and both of them seem to be 6 mm (never rely on a broken vernier calliper!). Later on I realize that the existing system is from the US which means they use the imperial system so that tube is actually 6.35mm or in other words 1/4 inch! Doesn't really fit with the new UK equipment! Gggrrrhhh!!! Why can't the Americans use the metric system like everybody else does?? would make life that much easier for us poor souls!
But luckily the workshop guy managed to fix the problem but not before teasing me around with "oh, you are in big trouble here!".

And of course there were other subtleties that sent me running around looking for solutions, but I'll spare them here.

Ok, so now all the connections are done and everything seem to fit! But I still haven't received the vacuum hose that I ordered. Expecting another 'sent to the wrong person' escapade, I run around to check the mail centre of the university, only to find it never got here.
So I call up the supplier, who answers my question rather sheepishly "ehh...we kind of ran out of it.., so we had to wait for the next delivery" !!!!!??!!!!##$*?&**#&^!!???

Oh god! so now we are nearing the 15th day mark. Hopefully the hose will get delivered tomorrow morning, in which case 'hopefully' I will be able to get the thing up and running (fingers crossed!) but of course I wouldn't be surprised if some issue does turn up! I'm kind of sure that something will turn up......I have a gut feeling.......but of course I'm feeling paranoid!


Wish me luck!

Wednesday, 14 May 2008

Bruno's Sculpture Garden, Marysville

As promised here is a glimpse of the Sculpture Garden that we had the good fortune to pay a visit to.


Bruno is a Belgian expat with a talent at making sculptures that are a bit on the funny side. And just like his sculptures he too has an unusual sense of humour. Most of his sculptures are made out of Terra cotta along with some day-to-day accessories.

The fun part of it is exploring through his rather overgrown garden. There you get to meet various creatures and people in every nook and cranny, some hidden away among the bushes, some having a bath in the ponds and puddles and some up in the trees.


An alligator on the rocks


This one is a bit creepy... it's located such that it catches you off guard


The mouse man....take a closer look (below picture)


How many mice can you count?


Carved out of a tree


If you follow the sound of the music, it will lead you to this man


A handful of water


Pocahontas


The bird man


A Yogi


We started off the morning visiting this place, so needless to say the whole day was invigorating!

Monday, 12 May 2008

Shades of Autumn in Marysville, Victoria

The Victorian ACS conference was held last weekend in Marysville (that's about 2 hours drive from Melbourne city). So Yasas was to attend the conference and I was to tag along with him.

Expecting a remote country area I took along two books with me to keep me company. I was expecting to be stuck up inside a hotel room reading about Nanophotonics. Fortunately that was not to be. Nature was so unforgivingly beeeeauuuutiful that I spent both days outdoors.



The mountains.... the trees.... the mist.....



Yellow is now in fashion



A combination of colours



Look at the shades of colour!!!


An unusual mushroom



A serence duck pond


Cockatoos, looking for lunch under the bed of fallen leaves.


Parrots in colour

On the second day we formed a kind of wives' club, Several spouses of the conference attendees got together and did some walking.

We all enjoyed "The Sculpture Garden" which truly deserves a separate post. And then the 4km walk through the woods to see the Steavenson falls.



Waterfall in the middle of the woods

Saturday, 3 May 2008

Ballarat, the city of gold

Ballarat is just over 100 kms west of Melbourne. Even though there's not much happening there right now, it has been 'the place to be' less than a century ago.

It all started when a couple of wanderers came across a nugget of gold lying around on the ground. How lucky is that?? So the news spread and as you would have guessed, people around the world packed up their things and came running down here. Most of these migrants came from England and China.

But of course not everyone was lucky, according to statistics only 1% of the gold miners actually hit the jackpot. However the consolation prizes were enough for most miners to buy their own cottage and move out.

The preferred method of transport in Sovereign Hill

According to a guide there Ballarat has (or rather had) the most purest form of gold occurring in nature, second place went to Kalgoorlie in Western Australia, and third came South Africa. However I could not find any sources to back this up, so I'm still a bit critical about that statement.

Anyhow, just over a period of half a century the city of Ballarat managed to export tonnes of gold before the last mine was closed down in the 1920's. So there isn't much gold around these days.

Some people are still hopeful that they might find something that glitters!

The major attraction of the place is "Sovereign Hill" which recreates life in the 1850's golden era. It's a whole village with gold mines, blacksmiths (who process the dug gold) miners quarters, shops, schools and what not. This is a real nice place to experience life back then, and you can easily spend a whole day walking around, exploring mines and learning all about gold.

A blacksmith, pouring the molten gold (1200 Celsius) into a mould, to make a bar of gold.

Towards the end of our small vacation in Ballarat we popped into "Kirrit Bareet"which is an aboriginal gallery. The place wasn't marketed as much as the other attractions, and it wasn't a very commercialized entity either. But there we learnt that there was another side to this gold coin. The pictures and stories on the walls told us a different side of the gold rush.

Before the whole gold rush thing began, this area was inhabited by the aboriginal people. The gold rush created in the mid 19th century saw them losing their lands and their lives. Few of the natives stood up against the white man, only to be perished under their aggressive rule. Some miners actually had an aboriginal person's skull hanging outside their door, so as to scare them off!

All the other places we've been to in Ballarat talked in detail about the harsh conditions the miners had to face in making a living, the way they stood up against the unfair conditions under which they had to work, but I don't think that in any way compares with the injustice that the aboriginal people had had to face, and it was a bit disappointing that it wasn't even mentioned anywhere other than on a wall in this small silent gallery.


An unexpected find. A vintage car exhibition