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 Episode 14 - Twinkle, Twinkle, Little Star...: Play Now | Play in Popup | Download (801)

The topic of this episode is stellar magnitudes. Stellar magnitudes are a logarithmic brightness scale that astronomers use to determine information about stars. Apparent magnitude is a measure of the relative brightness as viewed from earth, and absolute magnitude is an logarithmic power ratio indication, equal to a quarter of a dB.

Some discussion of what properties of a star can be determined from stellar magnitude measurement is discussed, including distance, radius, and temperature.

We also announce our new store at http://store.learningmeasure.com, where you can purchase DVD’s of past episodes of LearningMeasure.tv, and training manuals associated with LearningMeasure.com. Soon we will add training videos, and other texts.

We also announce two new courses added to the course catalog MEAS401 - Basic RF and Microwave Power Measurement, which contains material from Episode 13 plus more. Also added was PERL103 - Perl, Forms, and CGI, which is the third in our series of courses on the Perl programming language.

Try GotoMeeting free for 45 days! Increase the power of your meetings. For this special offer, visit www.gotomeeting.com/podcast.

As always, if you want have a suggestion for future episodes or on anything we should be doing with this podcast, send me an e-mail at suggestions@learningmeasure.tv. If you have any science, engineering, or even homework question, send it to questions@learningmeasure.tv. If you are a vendor or consultant that would wish to appear on our program, e-mail us at vendors@learningmeasure.tv.

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 Episode 13 - Power Revisited: Play Now | Play in Popup | Download (860)

This episode is the result of a question by one of my co-workers. This episode goes more into the details of power measurement and how one would correct for mismatches and losses in power measurement and transfer of power calibration. Enjoy!

Try GotoMeeting free for 45 days! Increase the power of your meetings. For this special offer, visit www.gotomeeting.com/podcast.

This episode was inspired by a question from one of my co-workers, let the next one be inspired by you. Please send us an e-mail at either questions@learningmeasure.tv or suggestions@learningmeasure.tv to determine what will be presented next!