datasheets.com EBN.com EDN.com EETimes.com Embedded.com PlanetAnalog.com TechOnline.com  
Events
UBM Tech
UBM Tech

Engineering Lifestyle

Comment


Max the Magnificent

6/12/2012 9:17 PM EDT

Hmmm, when I said "naked eye" I meant with my dark glasses but without a ...

More...



antedeluvian

6/12/2012 9:10 PM EDT

There are not enough indents to reply directly to your question. According to ...

More...

Transit of Venus – Help us recreate a scientific experiment

Clive Maxfield

6/5/2012 12:37 PM EDT

Do you recall my blog from a few weeks ago titled Get ready for a sight you'll never see again? (Click Here to see that blog).

This blog discussed the fact that the next Transit of Venus (when we can see the planet Venus passing across the face of the Sun) will occur on June 5 or 6, 2012, depending on your location.

Observers in North America see it on the evening of June 5 – which is THIS EVENING as I pen these words. This is something we don’t want to miss, because it will be the last transit of Venus to occur in our lifetimes. These things come in pairs separated by eight years, and the next such pair won’t occur until December 2117 and December 2125.

In his review of the book The Age of Wonder by Richard Holmes (Click Here to see this review), my friend Aubrey Kagan notes that the first chapter of the book is devoted to the first scientific expedition to view the Transit of Venus astronomical phenomenon. Led by Captain Cook, the expedition included one Joseph Banks, a man who would distinguish himself in the service of science for many years.

The thing is that I just received an email from Alwyn Nixon-Lloyd, who says:

Hi Max, Firstly, I always enjoy reading your editorials at the start of your newsletters.  They're always interesting.

I hope I haven't left it too late to write to you, but one of my friends has created a very nice little webpage app that will re-create one of the early large scale scientific experiments to calculate the size of the Astronomical Unit, using the transit of Venus.
 
It basically uses twitter posts to log when people see the start and the finishing times of the transit, as well as the geo-tagging facilities of twitter to enable the location to be logged.


Would it be possible to give the page a plug in one of your editorials?

Well, what can I say? I think this is a GREAT idea. Full instructions are given on the Transit2012 webpage. All you have to do is to use Twitter to Tweet when you see the transit begin and/or end as shown below:


The site also gives instructions about GeoTagging your Tweets (it's important for the math to know where you are) and tells of a related phone app.

I have my special glasses at the ready (do NOT look directly at the sun with your naked eyes) and I cannot wait … I just hope the cloud cover that is currently in the sky dissipates before the event occurs…


If you found this article to be of interest, visit Programmable Logic Designline where – in addition to my Max's Cool Beans blogs – you will find the latest and greatest design, technology, product, and news articles with regard to programmable logic devices of every flavor and size (FPGAs, CPLDs, CSSPs, PSoCs...).

Also, you can obtain a highlights update delivered directly to your inbox by signing up for my weekly newsletter – just Click Here to request this newsletter using the Manage Newsletters tab (if you aren't already a member you'll be asked to register, but it's free and painless so don't let that stop you [grin]).




antedeluvian

6/6/2012 10:29 AM EDT

I heard the author interviewed, and it sounded like my kind of book (The Day the World Discovered the Sun: An Extraordinary Story of Scientific Adventure and the Race to Track the Transit of Venus by MArk Anderson)-
http://www.amazon.com/The-Day-World-Discovered-Extraordinary/dp/0306820382/ref=sr_1_1?ie=UTF8&qid=1338992764&sr=8-1

Sign in to Reply



Max the Magnificent

6/6/2012 10:37 AM EDT

That does sound like a good one -- but I'm putting new book purchases on hold at the moment because I have piles on my office floor waiting to be read.

If you read this one, please let us know what you think of it.

Sign in to Reply



Dr DSP

6/6/2012 12:18 PM EDT

The live view of the transit I saw online showed venus at the top of the sun, not the bottom. I wonder if this is an artifact of the telescope or location on earth. Anyone know?

Sign in to Reply



Max the Magnificent

6/6/2012 12:24 PM EDT

You are right -- I was looking at the bottom (because of the pics I had seen) but it actually appeared at the top

Sign in to Reply



SteveD_Aus

6/7/2012 3:33 AM EDT

Depends where you are on the earth. For Australia Venus appeared in the 7...8 o'clock area. NASA were watching it from central Australia because of our great vantage point, so they may be the images you saw.

Sign in to Reply



Buck-on-Bass

6/11/2012 10:03 AM EDT

Some telescopes may have inverted the image or the cameras my have been placed such that the image was inverted. Erecting prisms are available for viewing inverted images.

Sign in to Reply



Max the Magnificent

6/11/2012 10:55 AM EDT

I did think about that -- I guess every picture has it's own story ... it just took me by surprise to see Venus at the top of the sun when I was expecting to see it at the bottom...

Sign in to Reply



Max the Magnificent

6/11/2012 10:56 AM EDT

Does anyone know when the next lunar eclipse is due? (I want to play with my dark glasses again :-)

Also, will the 2016 Transit of Mercury be visible to the naked eye?

Sign in to Reply



SteveD_Aus

6/11/2012 8:19 PM EDT

Hi Max, this should be a good start:

http://eclipse.gsfc.nasa.gov/eclipse.html

Sign in to Reply



Max the Magnificent

6/12/2012 10:24 AM EDT

So there's a total solar eclipse coming on Nov 13 -- I can't wait !!!

Sign in to Reply



antedeluvian

6/12/2012 5:55 PM EDT

According to this, you are going to have to change your walk across America to a swim to somewhere in the South Pacific if you want to see it. If you feeling energetic enough you can swim on to Cairns and see it there-
http://eclipse.gsfc.nasa.gov/SEmono/TSE2012/TSE2012.html

Sign in to Reply



Max the Magnificent

6/12/2012 5:57 PM EDT

Bummer -- OK, since you seem to have so much time on your hands (grin), when is the next time I can see a solar eclipse or a lunar eclipse in Huntsville Alabama USA?

Also will the Transit of Mercury in 2016 be visible to the naked eye?

Sign in to Reply



antedeluvian

6/12/2012 9:10 PM EDT

There are not enough indents to reply directly to your question. According to this site, if I read it correctly, (http://mreclipse.com/Special/SEnext.html )
The next total eclipse visible from the east coast of North America will be 21 Aug 2017. There is a partial eclipse on 23 Oct 2014. And if you can figure out what a hybrid eclipse is, there appears to be one on Nov 3 2013.

According to Wikipedia (http://en.wikipedia.org/wiki/Transit_of_Mercury) the transit of mercury will be visible to the eastern seabord, but if you see it with the naked eye, you probably won't see much else ever again.

Sign in to Reply



Max the Magnificent

6/12/2012 9:17 PM EDT

Hmmm, when I said "naked eye" I meant with my dark glasses but without a telescope.

It might be worth traveling to the East Coast just to see the Transit of Mercury ... we'll see if I can afford it nearer the time -- thanks for looking this up for me ... now all you have to do is to make a note in your calendar to remind me (grin)

Sign in to Reply



Please sign in to post comment

Navigate to related information

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)