Tag: Teaching

This is the companion piece to the one about gold from Friday night in Popular Culture.  Obviously, we intend to get geekier tonight than we did Friday.  Then we talked about gold being used primarily as money or other symbols of wealth.

Tonight we will discuss how gold is mined and purified, and the actual industrial uses for it as opposed to jewelry and investment purposes.  The old picture that most folks have about the forty-niner with his gold pan is far from how gold is mined, and was not really very accurate even then, being mostly a product of Hollywood.

This is designed to be a companion piece to a new Pique the Geek installment of the same title that will be published Sunday.  The idea for this dual treatment of gold was inspired by our good friend and supporter from the other two sites to which I contribute, ek hornbeck.

This half of the couple has to do with gold in a nontechnical sense.  The one on Sunday gets, obviously, much more Geeky.  However, technical uses aside, gold has been part of the popular culture since prehistory.  Only recently have truly technical uses for gold been found, and those will be covered elsewhere.

Tonight we shall look at some of the history of gold in popular culture, and finish with a discussion of the so-called gold standard and the numerous sales pitches that dominate the conservative airwaves.  We shall try not to get too Geeky.

This topic was suggested by our good friend and regular supporter of this series from The Big Orange, Ottery Scribe.  It is really a fascinating subject, and rich with lore and tradition from the old countries.  As a disclaimer, I must say that I do not really enjoy either of them except for an occasional 12 year old Old Charter, diluted with some cold water.

I actually used half a pint of bourbon just before Christmas, to plump the raisins that I use for my trademark Lizzies fruit cookie.  Look back to just before Christmas for links to the recipe for them.

Happy New Year to everyone!  I hope that 2011 will find you well and prosperous.  Last week we began to examine the so called Rare Earth Elements, which turn out to have lots of uses, many of them to do, oddly, with optics in diverse ways.  This week we shall finish up the series about them.

I reluctantly admit that I did not take as much time as necessary for the piece last week, mostly because even I did not understand just how important these elements are, both from a modern technological standpoint and also from an historical one for chemistry becoming a modern, “hard”, science.  First we shall look into some history, then finish up the elements themselves.

Folks, we are coming up to a New Year.  2010 was not kind personally or politically for me, but I am thankful that I remain breathing.

In many respects, that has to do with you, Dear Audience!  You have read many of my thoughts and responded to them.  Agree or disagree, many of you responded.

I have been a Big Orange person for years, but was asked to edit on another site recently.  I very gladly accepted, but will never forget this place.

I rarely write fiction, because I am better at scientific nonfiction.  However, listening to Stossel on the Fox “News” Network just now has stimulated me to imagine.  And what an imagination it is!

The three of them were on a junket and their small aeroplane crashed, gently, onto an uncharted island, sort of like Gilligan’s.  The three of them, plus the pilot (a rank amateur) and the other crew of one (a 55 year old mother of three) survived, but in very different camps.

This time we have decided to get back to geeky science and technology.  I had thought about writing about Winter Solstice celebrations through the eons, but that has passed now.  Next year for sure.

The Rare Earth Metals are a group of elements that are extremely closely related in atomic number (henceforth called Z), mass, and chemical properties.  I would wager that most folks who are not technical have never heard of them, except maybe on Mythbusters (the neodymium magnets are the strong ones that they use now and then), let alone touched one to their knowledge.

But almost everyone uses them on a daily basis, and most have indeed touched at least one.  Please come with us and let us explore these interesting and essential elements.

This is the time of the year that I get creative in the kitchen, and almost all of what I prepare is given away to friends and family.  I had hoped to be ready to ship tomorrow, but I got behind and will have to ship Tuesday.  Perhaps too late for Christmas, but certainly not for the rest of the holiday season.

I vary my menu year to year, but a couple of things are standard.  One is Lizzies, a sort of fruit cookie that is reminiscent of fruit cake, except Lizzies are good.  Another is chocolate fudge, with black walnuts.  Both of these were always around during my childhood, because my mum loved everything about Christmas and was an excellent cook.

Those of you who read this column know that from time to time I write about TeeVee adverts.  It seems as if some of the worst ones come out during the holiday season, many but not all connected with extracting money from you for gifts.

Before we get going on these new ones, please remember back a couple of months when I wrote about the Tide laundry detergent advert that featured the daughter asking her mum if the mum had seen her green shirt.  The mum thought back to wearing it and stained it with food.  Then she lied to her daughter saying, “Honey, that’s not my style”.  This advert has been modified and now the mum says nothing to the daughter about it.  I consider this a small victory for decency in advertising, and credit this column with at least a bit of influence.  Thank everyone for the support.

One of the more revolutionary innovations in lighting is the Light Emitting Diode, or LED.  This cutting edge technology was first discovered 103 years ago!  However, only comparatively recently have LEDs been either efficient or cheap enough for wide use.

LEDs operate just like any other diode, allowing an electric current to pass, for the most part, in only one direction.  They are built by placing into contact a P-type (positive) and an N-type (negative) semiconductor and passing a current from the N to the P materials.  In the case of LEDs, when the electrons and holes recombine, light is emitted.  In most diodes, heat is emitted.  Actually, LEDs do produce some heat as well and this becomes important for reasons to be discussed later.