1,060
edits
Star brightness and star distance: Difference between revisions
From OER in Education
Star brightness and star distance (view source)
Revision as of 18:58, 26 September 2012
, 12 years agoThe picture of Christian Huygens is PD from wikipedia
mNo edit summary |
m (The picture of Christian Huygens is PD from wikipedia) |
||
| Line 6: | Line 6: | ||
|topic=Astronomy | |topic=Astronomy | ||
|subject=Science | |subject=Science | ||
|tagline= | |tagline=A slide presentation to explain how we measure stars, then and more. | ||
|image= | |image=Starsandbrightness0.png | ||
|resourcenumber= SC0035 | |resourcenumber= SC0035 | ||
|Learning Objectives= | |Learning Objectives= | ||
* | * recall how star distances were calculated using parallax | ||
* | * explain how Christian Huygens calculated the distance of the star Sirius | ||
* | * explain how Huygens' assumptions led to an inaccurate calculation | ||
* | * how we use black body radiation to calculate the temperature of distant stars | ||
|age=Secondary | |age=Secondary | ||
|content= | |content=In the 17th century, Christian Huygens discovered how to estimate how far away a star is. He made a series of smaller holes in a screen facing the sun, until he estimated the light was the same intensity as the star Sirius. Huygens' results were surprisingly accurate, but still wrong. This series of slides may inspire you to tell the remarkable story of how we measure stars. The teacher explains his approach in an audio file and provides a web link to an interactive tool used in the presentation. The presentation had been converted to alternative formats. | ||
|format= | |format= | ||
|strategy= | |strategy= See the teacher's note on 'active-note taking' | ||
|additional resources= | |additional resources= | ||
|useful information= | |useful information= | ||
| Line 23: | Line 23: | ||
|other= | |other= | ||
|resources= | |resources= | ||
* Smartboard notebook | * Smartboard notebook version [[File:10 - Star Brightness, Size and Distance.notebook]] | ||
* Powerpoint version:[[ ]] | * Powerpoint version:[[File:10 - Star Brightness, Size and Distance.pptx]] | ||
* PDF | * PDF version [File:Star brightness & distance.pdf]] | ||
* | * Teacher's audio explanation of how the lesson was delivered [[media:CT - Star brightness voiceover.MP3]] | ||
* Link to Blackbody Radiation Applet http://www.mhhe.com/physsci/astronomy/applets/Blackbody/frame.html | |||
}} | }} | ||
