Changes between Version 480 and Version 481 of AstroTechTalk
- Timestamp:
- 2 Jul 2020, 11:52:30 (4 years ago)
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AstroTechTalk
v480 v481 49 49 || '''19.06.2020 (11hrs, Zoom)''' || '''Christian Fendt''' || '''Video-link: https://zoom.us/j/92284682766?pwd=bE0yRmFrNjZzNUlKaWFNMHZLZ3RuUT09 [[BR]][[BR]]Astronomy for Non-Astronomers (Part 3)'''[[BR]][[BR]]This lecture series is intended as further eduction for colleagues at MPIA who are NOT working as astronomers. We want to raise interest for this interesting field of research, maybe even raise enthusiasm. [[BR]] [[BR]] Part 1 ([https://intranet.mpia.de/intranet/en/lecture-series recording of April 24th 2020]) and part 2 ([https://intranet.mpia.de/intranet/en/lecture-series recording of May 15th 2020]) provided an overview over the astronomical objects.[[BR]][[BR]]In this part of the lecture series we will discuss what light is, what properties it has, and how we could learn something about the properties of distant astronomical objects by observing them with telesopes and instruments.[[BR]] [[BR]] External guests are cordially invited as well.[[BR]][[BR]]Presentation: German[[BR]][https://intranet.mpia.de/intranet/en/lecture-series Slides/Recording: German] [[BR]]Questions: German, English || 50 50 || 26.06.2020 || || || 51 || '''03.07.2020 (11hrs, Zoom)''' || '''Coryn Bailer-Jones''' || '''Video-Link: https://zoom.us/j/ 2521989441[[BR]][[BR]]The Space Elevator'''[[BR]] [[BR]] Rockets are a rather ineffective way into space. In order to bring a satellite into an orbit around Earth, each ton of payload requires 50 to 100 rons of propellant (plus the rocket itself). One alternative would be a huge elevator reaching up into the orbit. In contrast to a building, which is exposed to pressure loads, due to its height such an elevator would be rather equivalent to a cable under tension. While such a construction is in principle possible, it requires materials which are currently available only in tiny amounts. Anyhow, such an elevator would allow for a much cheaper access into space. Coryn Bailer-Jones will describe the principles of such a construction, the practical challenges during its erection and how we could use it to bring spacecrafts into orbit.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2020S1/2020-07-03_Weltraumaufzug.pdf Slides: German][[BR]]Questions: German, English ||51 || '''03.07.2020 (11hrs, Zoom)''' || '''Coryn Bailer-Jones''' || '''Video-Link: https://zoom.us/j/99009962194?pwd=cVU1NUpnL1c5MjNoZlZGTEgvNTB2QT09 [[BR]][[BR]]The Space Elevator'''[[BR]] [[BR]] Rockets are a rather ineffective way into space. In order to bring a satellite into an orbit around Earth, each ton of payload requires 50 to 100 rons of propellant (plus the rocket itself). One alternative would be a huge elevator reaching up into the orbit. In contrast to a building, which is exposed to pressure loads, due to its height such an elevator would be rather equivalent to a cable under tension. While such a construction is in principle possible, it requires materials which are currently available only in tiny amounts. Anyhow, such an elevator would allow for a much cheaper access into space. Coryn Bailer-Jones will describe the principles of such a construction, the practical challenges during its erection and how we could use it to bring spacecrafts into orbit.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2020S1/2020-07-03_Weltraumaufzug.pdf Slides: German][[BR]]Questions: German, English || 52 52 || 10.07.2020 || || || 53 53 || '''17.07.2020 (11hrs, Zoom)''' || '''Christian Fendt''' || '''Astronomy for Non-Astronomers (Part 4)'''[[BR]][[BR]]This lecture series is intended as further eduction for colleagues at MPIA who are NOT working as astronomers. We want to raise interest for this interesting field of research, maybe even raise enthusiasm. [[BR]] [[BR]] Part 1 ([https://intranet.mpia.de/intranet/en/lecture-series recording of April 24th 2020]) and part 2 ([https://intranet.mpia.de/intranet/en/lecture-series recording of May 15th 2020]) provided an overview over the astronomical objects.[[BR]][[BR]]In this part of the lecture series (parts 3 and 4) we will discuss what light is, what properties it has, and how we could learn something about the properties of distant astronomical objects by observing them with telesopes and instruments.[[BR]] [[BR]] External guests are cordially invited as well.[[BR]][[BR]]Presentation: German[[BR]][https://intranet.mpia.de/intranet/en/lecture-series Slides/Recording: German] [[BR]]Questions: German, English ||
