Thursday, May 22, 2008

Sri Pada (Adam's Peak)

A photo of mount Sri Pada. (During out last trip)

"Saama Chaithyaya" ("Saama" dageba). You meet this when you are climbing Sri Pada.

Applications of superconductors

Superconducting magnets are some of the most powerful electromagnets known. They are used in MRI and NMR machines and the beam-steering magnets used in particle accelerators. They can also be used for magnetic separation, where weakly magnetic particles are extracted from a background of less or non-magnetic particles, as in the pigment industries.

Superconductors have also been used to make digital circuits (e.g. based on the Rapid Single Flux Quantum technology) and RF and microwave filters for mobile phone base stations.

Superconductors are used to build Josephson junctions which are the building blocks of SQUIDs (superconducting quantum interference devices), the most sensitive magnetometers known. Series of Josephson devices are used to define the SI volt. Depending on the particular mode of operation, a Josephson junction can be used as photon detector or as mixer. The large resistance change at the transition from the normal- to the superconducting state is used to build thermometers in cryogenic micro-calorimeter photon detectors.

Other early markets are arising where the relative efficiency, size and weight advantages of devices based on HTS outweigh the additional costs involved.

Promising future applications include high-performance transformers, power storage devices, electric power transmission, electric motors (e.g. for vehicle propulsion, as in vactrains or maglev trains), magnetic levitation devices, and Fault Current Limiters. However superconductivity is sensitive to moving magnetic fields so applications that use alternating current (e.g. transformers) will be more difficult to develop than those that rely upon direct current.

Wednesday, May 14, 2008

Do You Know?

* Screeched

The largest one syllable word

* Dreamt

The only word ends with “mt”


* There are no other words rhymes with,

Mouth, silver, purple, orange


* I

Title

* Set

The word which has most meanings

* Underground

The only word begins and ends with “und”

* Therein

This single word contains 11 words in it and those are there, he, in, rein, her, here, ere, I, therein and herein


* Stewardesses

The longest word that can be typed only from the left hand


* Uncopyrightable

The only 15 letter word that can be spelled without repeating a letter


* Facetious, abstemious, arsenious

Contain all the vowels in the correct order

* Pneumonoultramicropicsilicovolcanoconiosis

The longest word in English according to oxford

* El Pueble de Nuestra Senora la Reinade los Angeles de Porciuncula

The long term of LA (Los Angeles)


* “Taumatawha katangihangakoau auotamate turipukakapikimaungaharonukupokaiwe-naukitnahatu”

The longest place name in the world, “Moori” name for a hill in newzeland

Thursday, May 8, 2008

Graduation is a time

Graduation is a time
For feeling very proud,
For thinking lots of lovely thoughts
And saying them out loud.

It's a time for feeling love
About to overflow,
And just before it leaps its banks,
To let the loved one know.

And so I'm very proud of you
For being who you are,
For making something of yourself,
For making it this far.

I'm proud because I am a part
Of everything you do.
This time's the time to say how much
In love I am with you.