Thursday, May 22, 2008
Sri Pada (Adam's Peak)
"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
The long term of LA (
“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.