Science Sunday 05-14-17

Baby Big Bird

After 25 years of cloak and dagger intrigue regarding the whereabouts and nature of a fossilized “baby dinosaur in the egg” known colloquially as “Baby Louie”, the dino has been identified as a new species of oviraptorosaur called beibeilongsinensis.

While small in its sarcophagal shell, feather-covered Louie would have grown up to be a metric ton, 1000 kg in mass or 2000 lbs in weight, a prehistoric version of our beloved Big Bird.

You Smell!

A recent study by John McGann of Rutgers University asserts that the human sense of smell is on a par with other mammals, including rodents and dogs.

We have been conditioned to think poorly of our noses, says McGann, because of research done in the 19th century, which doesn’t hold up to extensive modern experimentation.

An earlier estimate that humans can only distinguish between about 10,000 scents should be replaced by 1 trillion scents, eight orders of magnitude larger, says McGann.

You can read more about McGann’s study here.

Maybe if we were closer to the ground, we would do some more sniffing around:

In related work, researchers at the University of Chicago have determined that losing your sense of smell is a precursor to a more imminent death.  After testing a large number of people to see if they could distinguish the scents of rose, leather, fish, orange and peppermint, and rating the participants as good, medium and poor sniffers, they found that of these folks who had died 5 years after testing, those with the weakest sniffing abilities were 400% more like to die than those with the best sniffing abilities:

You can read more about this fascinating study here.  I’m off to buy some oranges!

The Metric System

Back in the 1970s, there was much talk about the Unite States going metric.  In particular, there was an oil embargo going on, and for a very short time, gas was sold in liters.

The reason this occurred is that OPEC caused per gallon pricing to exceed one dollar, and the mechanical pumps at that time couldn’t charge prices over a dollar.  Some stations went with per half gallon pricing, and some went with per liter pricing.

Americans couldn’t (or wouldn’t) do the math, and were incensed that the gas stations might be cheating them, and so in pretty quick order, all the mechanical pumps were retrofitted to charge up to $9.99 per gallon.

At about the same time, pop (or perhaps you say soda) started selling by the liter and two liter, and today, we are quite used to this metric volume measure, at least for our sugary supplements.

Originally, the metric unit of mass, the kilogram, was defined as 1000 cubic centimeters (or 1000 milliliters) of pure water at 4 degrees Celsius, but consequent to the Metric Convention of 1875, the kilogram standard has been based on a solid platinum-iridium cylinder stored in Paris, two copies of which are stored here in the United States at NIST (our weights and measure lab).

Recently, the youtube channel Veritasium visited NIST to see these metric kilogram standard copies.  I was surprised to find out that the US is actually on the metric standard, and all the US-English units we use are defined in terms of their metric equivalents.

FYI, if you in the future choose to drive a car in Europe, you will have to buy gas by the liter, so remember that one liter is about one US quart.  Take the per liter price, multiply by four, and convert that four liter Euro price to US dollars to find out how much you are really paying per US gallon for gas.

Right now in France the price is surprisingly low, at $5.79 per US gallon.

BTW, Brexit enthusiasts, beer in England is still sold by the Imperial pint, which is about 1/6th larger by volume than the US pint.  Explains a lot about UK soccer hooligans!

Sponge Bob Clown Pants

I always liked topology, that area of mathematics which challenges you to see whether you can deform the shape of one shape into another, without using tearing or gluing operations along the way.

Mathematician Kelsey Houston-Edwards of PBS Infinite Series explores this fascinating subject.

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