Messages In This Digest (3 Messages)

1a.: Lowongan di Rusydi's Lab, NUS, Singapura From: Firdaus Prabowo
1b.: Inside of Thermometer (?) From: Regina

2.: Nobel Prize in Physics 2009 From: Haryo

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1a.: Lowongan di Rusydi's Lab, NUS, Singapura

Posted by: "Firdaus Prabowo" bowo_fis01@yahoo.com bowo_fis01

Tue Oct 6, 2009 2:45 am (PDT)

[Attachment(s) from Firdaus Prabowo included below]

Dear all,

Melanjutkan info dari Prof. Andrivo Rusydi, di attachment dapat dilihat beberapa opening untuk PhD dan Research Fellow di NUS, Singapura.

Tolong disebarkan.

Thanks,
Bowo

Attachment(s) from Firdaus Prabowo

1 of 1 File(s)

Rusydi_Advertisment2009.pdf

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1b.: Inside of Thermometer (?)

Posted by: "Regina" reggie_nih@yahoo.com reggie_nih

Tue Oct 6, 2009 3:18 am (PDT)

Ada berbagai jenis isi dari termometer, dengan masing-masing keunggulan dan kekurangannya. Di beberapa buku teks Fisika untuk sekolah menengah, dinyatakan bahwa:
Karena alkohol memiliki titik didih yang rendah (78 derajat celcius), pemakaiannya terbatas, antara lain tidak dapat mengukur suhu air ketika mendidih.

Sementara kita ketahui bahwa termometer yang digunakan di laboratorium adalah termometer dengan alkohol sebagai cairan pengisi pipa termometernya (yang standar, dengan cairan merah di dalamnya), dan termometer ini bisa digunakan untuk mengukur suhu air ketika mendidih (bahkan skalanya ada yang sampai dengan 110 derajat celcius).

Ada 2 kemungkinan:
1. Termometer yang standar dipakai di laboratorium sekolah/universitas TIDAK berisi alkohol (walaupun pihak laboran secara tegas menyatakan bahwa termometer tersebut berisi alkohol), [kalau bukan alkohol, lalu apa?], atau:
2. isi termometer tersebut MEMANG alkohol, tapi jika benar, bagaimana penjelasannya sehingga alkohol dapat digunakan untuk mengukur suhu yang lebih tinggi daripada titik didih alkohol sendiri?

Saya sudah googling, tetapi belum mendapatkan jawaban yang memuaskan. Kebanyakan website menyatakan bahwa termometer standar memang berisi alkohol atau merkuri, tapi belum ditemukan spesifikasi rinci dari termometer dan bagaimana hubungannya dengan titik didih bahan yang berada di dalam termometer itu sendiri.

Apakah ada yang bisa menjelaskan apa sebenarnya yang ada di dalam termometer itu? Terima kasih sebelumnya.

N.B.: Rekan yang di PUDAK atau perusahaan sejenis mungkin bisa memberikan spesifikasi termometer standar (yang biasa digunakan di laboratorium sekolah/universitas) secara mendetail, thanks a lot before.

Regina
high school Physics teacher

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2.: Nobel Prize in Physics 2009

Posted by: "Haryo" sumowidagdo@gmail.com haryo_hep

Tue Oct 6, 2009 6:17 am (PDT)

Charles K. Kao, "for groundbreaking achievements concerning the transmission of light in fibers for optical communication".

Willard S. Boyle and George E. Smith, "for the invention of an imaging semiconductor circuit – the CCD sensor".

http://nobelprize.org/nobel_prizes/physics/laureates/2009/

Press Release
6 October 2009
The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2009 with one half to
Charles K. Kao
Standard Telecommunication Laboratories, Harlow, UK, and Chinese University of Hong Kong
"for groundbreaking achievements concerning the transmission of light in fibers for optical communication"
and the other half jointly to
Willard S. Boyle and George E. Smith
Bell Laboratories, Murray Hill, NJ, USA
"for the invention of an imaging semiconductor circuit – the CCD sensor"

The masters of light
This year's Nobel Prize in Physics is awarded for two scientific achievements that have helped to shape the foundations of today's networked societies. They have created many practical innovations for everyday life and provided new tools for scientific exploration. In 1966, Charles K. Kao made a discovery that led to a breakthrough in fiber optics. He carefully calculated how to transmit light over long distances via optical glass fibers. With a fiber of purest glass it would be possible to transmit light signals over 100 kilometers, compared to only 20 meters for the fibers available in the 1960s. Kao's enthusiasm inspired other researchers to share his vision of the future potential of fiber optics. The first ultrapure fiber was successfully fabricated just four years later, in 1970.
Today optical fibers make up the circulatory system that nourishes our communication society. These low-loss glass fibers facilitate global broadband communication such as the Internet. Light flows in thin threads of glass, and it carries almost all of the telephony and data traffic in each and every direction. Text, music, images and video can be transferred around the globe in a split second.
If we were to unravel all of the glass fibers that wind around the globe, we would get a single thread over one billion kilometers long – which is enough to encircle the globe more than 25 000 times – and is increasing by thousands of kilometers every hour.
A large share of the traffic is made up of digital images, which constitute the second part of the award. In 1969 Willard S. Boyle and George E. Smith invented the first successful imaging technology using a digital sensor, a CCD (Charge-Coupled Device). The CCD technology makes use of the photoelectric effect, as theorized by Albert Einstein and for which he was awarded the 1921 year's Nobel Prize. By this effect, light is transformed into electric signals. The challenge when designing an image sensor was to gather and read out the signals in a large number of image points, pixels, in a short time.
The CCD is the digital camera's electronic eye. It revolutionized photography, as light could now be captured electronically instead of on film. The digital form facilitates the processing and distribution of these images. CCD technology is also used in many medical applications, e.g. imaging the inside of the human body, both for diagnostics and for microsurgery.
Digital photography has become an irreplaceable tool in many fields of research. The CCD has provided new possibilities to visualize the previously unseen. It has given us crystal clear images of distant places in our universe as well as the depths of the oceans.
Read more about this year's prize
Information for the Public
Scientific Background (pdf)
In order to read the text you need Acrobat Reader.
Links and Further Reading

Charles Kuen Kao, British and US citizen. Born 1933 in Shanghai, China. Ph.D. in Electrical Engineering 1965 from Imperial College London, UK. Director of Engineering at Standard Telecommunication Laboratories, Harlow, UK. Vice-chancellor, Chinese University of Hong Kong. Retired 1996.
www.ieeeghn.org/wiki/index.php/Oral-History:Charles_Kao
Willard Sterling Boyle, Canadian and US citizen. Born 1924 in Amherst, NS, Canada. Ph.D. in Physics 1950 from McGill University, QC, Canada. Executive Director of Communication Sciences Division, Bell Laboratories, Murray Hill, NJ, USA. Retired 1979.
www.science.ca/scientists/scientistprofile.php?pID=129
George Elwood Smith, US citizen. Born 1930 in White Plains, NY, USA. Ph.D. in Physics 1959 from University of Chicago, IL, USA. Head of VLSI Device Department, Bell Laboratories, Murray Hill, NJ, USA. Retired 1986.
www.ieeeghn.org/wiki/index.php/Oral-History:George_E_Smith
Prize amount: SEK 10 million. Kao is awarded one half, Boyle and Smith share the other half.

Contact persons: Erik Huss, Press Officer, Phone +46 8 673 95 44, mobile +46 70 673 96 50, erik.huss@kva.se
Annika Moberg, Editor, Phone +46 8 673 95 22, Mobile +46 70 263 74 46, annika.moberg@kva.se

The Royal Swedish Academy of Sciences, founded in 1739, is an independent organization whose overall objective is to promote the sciences and strengthen their influence in society. The Academy takes special responsibility for the natural sciences and mathematics, but endeavours to promote the exchange of ideas between various disciplines.

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