The Skeptical Teacher

Musings of a science teacher & skeptic in an age of woo.

Posts Tagged ‘egg’

It’s Equinox Time, So Balance Some Eggs for Science!

Posted by mattusmaximus on September 22, 2011

Tomorrow, September 23rd, is the autumnal equinox in the northern hemisphere, and it is on this occasion that I like to inject a little skeptical and critical thinking fun into my physics classes.  Most of us have heard of the urban legend about balancing an egg on its end during the equinox – the thing is, this is true!  The myth is the implication that one can only do this on the equinox, when – in fact – you can balance an egg on end pretty much any time you want.

Case in point, here’s a couple of photos of me balancing eggs on their ends during the time of year exactly opposite to the equinoxes…

During the summer solstice…

And during the winter solstice…

In addition, here’s a nice Youtube video showing some tips on how to accomplish this trick:

The reason why this trick works boils down to simple physics: it’s called unstable equilibrium.  If you have a flat and level surface on which to perform this trick, and there aren’t a lot of vibrations around, then chances are you can balance a number of eggs in a standard dozen pack.  As long as the eggs are relatively smooth on their ends (look closely and you’ll see some bumps on some of them) and you are very patient, then with some practice pretty much anyone can perform this trick.  The Bad Astronomy blog has a pretty good rundown on the physics as well.

So the next time you hear someone pass along the “eggs can be balanced only on the equinox” myth, whip out some eggs and balance away.  It’s a quick, easy, and fun way to advocate for skepticism and science 🙂

Posted in astrology, magic tricks, physics denial/woo | Tagged: , , , , , , , , , , , , , , , , , , , , , , , , , | 2 Comments »

The Vatican & In-Vitro Fertilization: They Need to Enter the 21st… No, the 20th, Century

Posted by mattusmaximus on October 5, 2010

Okay, I saw this earlier today and I just couldn’t contain my disgust: Dr. Robert Edwards received the Nobel Prize for medicine this week due to his pioneering work on in-vitro fertilization (IVF).  Since the first “test-tube baby” was born in 1978 (a woman who also happens to now have her own child), over 4 million children have been born to parents through this application of medical science to the problem of infertility.  That’s not what is disgusting me – read on…

Dr. Edwards and his wife (left) along with Louise Brown, the first “test tube baby”, and her son.

In the process, we have learned a huge number of fundamental things concerning human reproduction & fertility.  Most people would call that progress, but not the Vatican…

Vatican official criticizes award of Nobel Prize to Robert Edwards

An official with the Vatican criticized the decision to award the Nobel prize for medicine to British doctor Robert G. Edwards for his work on in vitro fertilization, Italy’s official news agency ANSA reported Tuesday.

Ignazio Carrasco de Paula, president of the Pontifical Academy for Life, said giving the award to Edwards was “completely inappropriate,” according to the news agency.

He said Edwards’ work had created a market for human eggs and created problems of embryos being frozen, the news agency said. …

Apparently, the Vatican has decided to butt heads with the forces of progress & medical science on this one, even though IVF is widely accepted in society.  What’s the big deal?  Humans generated through this artificial process of procreation are just as human as the rest of us who came about the old fashioned way.  Is the Vatican harboring some secret fear of Frankenstein’s monster or something equally silly?

The thing that really bugs me about this pronouncement from the Vatican is not that they don’t approve of IVF – hell, no one is making their followers undergo IVF procedures – but that if they had their way, they’d outlaw IVF for everyone else.  And, while they’re at it, they would also probably like to do away with all birth control, since they seem to have a really big hangup about anything having to do with sex.

Ironic, seeing as how the Roman Catholic Church is run by a bunch of men who don’t know the first thing about sex… with adults, that is.

Posted in medical woo, religion | Tagged: , , , , , , , , , , , , , , , , , , , , | Leave a Comment »

Happy Summer Solstice: Skeptical Egg-Balancing Fun!

Posted by mattusmaximus on June 21, 2010

Happy Summer Solstice everyone! It might seem a strange thing to be celebrating, this specific position of Earth in its orbit around the sun, but we skeptics have our reasons. This, of course, has to do with the old myth of being able to balance eggs on their ends only during either the vernal (spring) or autumnal equinox – of course, all references are in regards to the northern hemisphere.

But wait, it’s not the equinox, so why bring up this myth now? To debunk it, of course. According to adherents of this myth, usually the same folks who are into astrology-related woo, during the equinoxes “things line up cosmically” (probably some misunderstood reference to the fact that the length of day & night are the same), and this should result in the capability to stand eggs on their ends.

The funny thing about this particular myth is that it contains a kernel of truth… you can stand an egg on its end on the equinox, just as you can at any time of the year – even the solstices, as far away from the equinox as you can get. Case in point, last summer (on June 21st, the summer solstice) I balanced three eggs on end in my kitchen…

Solstice Eggs

And this past winter solstice (well, close – on December 24, 2009), while visiting family for the holidays I balanced an egg on end in their kitchen…

These supposedly “cosmic events” took me all of just a few minutes to accomplish – with a little practice, it’s easy to do. To understand why it is that eggs can be balanced in this manner, it is more helpful to look to the science of physics rather than the pseudoscience of astrology – this link at the Bad Astronomy blog explains in more detail.

So, the next time you hear someone make this loony claim, have a little fun with it – whip out the eggs and balance away!

Posted in astrology | Tagged: , , , , , , , , , , , , , , , , , , , , | Leave a Comment »

 
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