Thursday, 8 April 2010

Astrofisika


"Menjadi Pribadi Yang Bermanfaat Adalah Kemauan Kuncinya adalah kemauan, kemauan kita memberikan manfaat kepada orang lain. Jika kita punya harta, kita bisa memberikan manfaat kepada orang lain dengan harta. Jika kita punya ilmu, kita bisa memberikan manfaat ilmu kepada orang lain. Jika kita punya tenaga, kita bisa memberikan manfaat dari tenaga kita kepada orang lain."
~Arip~

Frontiers and Controversies in Astrophysics

 

 

Lecture 13 - Stellar Mass Black Holes (cont.)

 

 

 

 

 

 

Overview:

 

 

 

Class begins with clarification of equations from the previous lecture. Four post-Newtonian gravitational effects are introduced and discussed in detail. The first of these is the so-called Perihelion Precession, which occurs when the major axis of a planet's elliptical orbit precesses within its orbital plane, in response to changing gravitational forces exerted by other planets. Secondly, deflection of light is described as the curving of light as it passes near a large mass. Gravitational redshift is explained as a frequency effect that occurs as light moves away from a massive body such as a star or black hole. Finally, the existence and effects of gravitational waves are discussed. The lecture closes with a brief history of the 1919 eclipse expedition that made Einstein famous.




Course Media

 

Transcript

html

Audio

mp3

Low Bandwidth Video

mov [100MB]

High Bandwidth Video

mov [500MB]


Problem sets/Reading assignment:

 

 

Problem Set 4 [PDF]
Problem Set 4 Solutions [PDF]







Step by Step into a Black Hole:
Courtesy of Ute Kraus, Max-Planck-Institut für Gravitationsphysik, Golm,
and Theoretische Astrophysik, Universität Tübingen
http://www.spacetimetravel.org/expeditionsl/expeditionsl.html


Black Holes and Neutron Stars:
"Written Description of Visible Distortion Effects"
Courtesy of Robert Nemiroff, Michigan Technological University
http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html

Sumber:

1. The University of Yale Open Course Ware

2. Professor Bailyn Websites

http://www.astro.yale.edu/bailyn/
http://www.astro.yale.edu/



Ucapan Terima Kasih:

1. Bapak. Prof. Dr. Ing. H. B. J. Habibie.

2. Departemen Pendidikan Nasional

3. Kementrian Riset dan Teknologi

4. Lembaga Penerbangan dan Antariksa Nasional


Disusun Ulang Oleh:

Arip Nurahman

Department of Physics, Indonesia University of Education

&

Follower Open Course Ware at MIT-Harvard University, Cambridge.USA.

Semoga Bermanfaat dan Terima Kasih

Sunday, 4 April 2010

Astrofisika





"Biasakanlah Memberikan Manfaat, Jadikan Gaya Hidup Kita: Jika memberikan manfaat kepada orang sudah menjadi kebiasaan kita, maka kita sudah mulai menjadi pribadi yang bermanfaat."
~arip~

Frontiers and Controversies in Astrophysics

 

Lecture 12 - Stellar Mass Black Holes

 

 

 

 

Overview:

 

One last key concept in Special Relativity is introduced before discussion turns again to black celestial bodies (black holes in particular) that manifest the relativistic effects students have learned about in the previous lectures. The new concept deals with describing events in a coordinate system of space and time. A mathematical explanation is given for how space and time reverse inside the Schwarzschild radius through sign changes in the metric. Evidence for General Relativity is offered from astronomical objects. The predicted presence and subsequent discovery of Neptune as proof of General Relativity are discussed, and stellar mass black holes are introduced.

Problem sets/Reading assignment:

 

Sheehan, William and Richard Baum. "Neptune's Discovery." Astronomy (September 1996) : 43-49.

Fernie, J. Donald. "In Pursuit of Vulcan." American Scientist (82) : 412-415.

Course Media

Transcript

html

Audio

mp3

Low Bandwidth Video

mov [100MB]

High Bandwidth Video

mov [500MB] 




Resources:

Class Notes - Lecture 12 [PDF]

Step by Step into a Black Hole:
Courtesy of Ute Kraus, Max-Planck-Institut für Gravitationsphysik, Golm,
and Theoretische Astrophysik, Universität Tübingen
http://www.spacetimetravel.org/expeditionsl/expeditionsl.html


Black Holes and Neutron Stars:
"Written Description of Visible Distortion Effects"
Courtesy of Robert Nemiroff, Michigan Technological University
http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html


Sumber:

1. The University of Yale Open Course Ware

2. Professor Bailyn Websites

http://www.astro.yale.edu/bailyn/
http://www.astro.yale.edu/


Ucapan Terima Kasih:

1. Bapak. Prof. Dr. Ing. H. B. J. Habibie.

2. Departemen Pendidikan Nasional

3. Kementrian Riset dan Teknologi

4. Lembaga Penerbangan dan Antariksa Nasional


Disusun Ulang Oleh:

Arip Nurahman

Department of Physics, Indonesia University of Education

&

Follower Open Course Ware at MIT-Harvard University, Cambridge.USA.

Semoga Bermanfaat dan Terima Kasih

Wednesday, 24 March 2010

Sekolah Pendidikan Robotika Indonesia



Sekolah Pendidikan Robotika Indonesia


Indonesian Robotics Education School

Visi



Melahirkan Ahli-ahli Robotika Bertaraf Internasional yang senantiasa Bertafakur, Bertasyakur dan Bertadabur terhadap Keagungan Yang Maha Kuasa





Misi

1. Melahirkan Ahli Robotika Berkualitas Internasional Berkarakteristik Lokal di tiap Kabupaten atau Kota Setiap Tahun Minimal 2 Orang.



2. Kaderisasi yang berkelanjutan dan terarah



Program



1. Mempelajari alat-alat elektronika sederhana di Sekeliling Kehidupan kita



2. Mempelajari bahasa-bahasa pemrograman komputer dengan tekun dan rajin



3. Mengembangkan kurikulum pendidikan Robotika





Langkah Setrategis Sederhana



1. Promosi Kesekolah-sekolah Kejuruan dan Menengah atas untuk membuat club-club kecil penggemar Otomasi, Kendali dan Robotika



2. Mengadakan Ivent-ivent kecil dan sederhana megenai Robotika


3. Istiqomah