Category: Education

Science is Us (2)

Amazing Statistics

The expression “mind-boggling” seems most appropriate here.

After reading my book, “The Ascent of Science“, referred to yesterday, I gathered together just a few of the randomly-miscellaneous statistics which most struck me. No doubt there are plenty more! PLEASE SEND ME YOUR MOST AMAZING NATURAL STATISTICS!

We are carbon-based creatures. EVERY SINGLE CARBON ATOM in our bodies
was created in a supernova explosion of a giant star. We are truly “Children of the Stars”.

The “Nature” of our world and existence is indeed almost unbelievable.

MOLECULES: They are extremely small: a teaspoonful of water contains about 200,000,000,000,000,000,000,000 molecules. If everyone on the planet set out to count these molecules one per second it would take over ONE MILLION YEARS.

A molecule of hydrogen in a steel cylinder travels at about 3,800 mph.
Molecules NEVER stop moving. A molecule in the air makes 6,000 MILLION collisions with other molecules PER SECOND.
The above two facts explain why the progress of molecules through space is extremely slow unless assisted by an external force (e.g. the wind)
Every second, your skin is subject to bombardment by 2*10 to the power 24 (200,000,000,000,000,000,000,000,000) blows from molecules in the air.

ELECTRONS: When you switch on a light bulb, approximately 3*10 to the power 19 (30 million million million) electrons flow through your lamp EVERY SECOND

THE ATOM

A man is about 10 BILLION times larger than an oxygen atom. If an atom were the size of a golf ball then a man would stretch from earth to the moon.
A teaspoonful of solid nuclei of atoms would weigh about 500 million tons.
The nucleus of a typical atom contains about 99.8% of the total mass of the atom.
The diameter of an atom is about 100,000 times the diameter of the central nucleus.
Most of an atom is empty space. Imagine a sphere of FIVE MILES to represent an atom. The nucleus on the same scale would be the size of a tennis ball.
Most of your body is empty space …..
A black hole is supposed to consist entirely of material from the nucleus; all the “empty space” has been stripped away. A black hole of the mass of the earth would be ONE CENTIMETER in diameter.

COLLAPSED STARS

There is believed to be a black hole at the centre of our galaxy with the mass of ONE MILLION times that of our Sun.
A pulsar or neutron star is a collapsed star that spins on its axis up to three or four thousand times per second.
A pulsar is ONE HUNDRED TIMES DENSER than a white dwarf, which is what our Sun will become once its nuclear fuel has been used up.
Pulsars sometimes send out gigantic amounts of visible light, equivalent to many times the total light emitted by the Milky Way.
A tablespoon of material from a neutron star would weigh about 3 BILLION TONS.

THE HUMAN EAR

can distinguish around 400,000 different sounds.
can detect sounds so quiet that the vibratory movement induced in the eardrum is not much more than the width of a calcium atom.

By Chris Snuggs

Science is Us!

A plea for science education.

science3small — a science class at Woolverstone Hall School, late 50s - click to see more

Apart from hearing and knowing that many people are suffering terrible hardships in this world, I find few things more depressing than to hear young people say “I’m not interested in science”.

We are part of Nature. Science is the study of Nature.

How can it possibly NOT be the most interesting and endlessly-fascinating of subjects? There is a shortage of well-trained science teachers in Britain. There are too many students doing courses on “Football Management”, “Media Studies” or even “sociology”.

Why is this? I can’t explain it. Can anyone else?

I am not a scientist, having had to abandon the study of physics and biology – two subjects I loved – because I was better at languages. Too many youngsters have to drop science at the age of 16. What an absolute folly in the technological age, even 50 years ago.

My point is not just that science is important but that it is so interesting. Is the problem that some kids find it “too hard”? That must be poor teaching, surely? You gear your lessons to your students.

One positive point about British schools – at least in my distant experience – was the great use made of practical work. I so looked forward to that in physics: boiling up water in calorimeters, mucking about with levers and pulleys, passing electrical currents through each other …. I looked on physics lessons as a game, not a boring school subject.

Yes, science CAN be hard, especially for those not that good at maths. Some of the most brilliant minds on the planet do science; we cannot hope to understand all they do. But this doesn’t matter, does it?

As for maths, I have recently been reading a most stupendous book, one that I cannot recommend too highly to any layman interested in science. Shown right, this was written by Brian Silver, former Professor of Physical Chemistry at the Technicon Institute of Technology in Israel.

I read and re-read this book every night, each time hoping – somewhat in vain – that I will eventually understand what quantum mechanics and relativity really are. But I read it, too, with a tinge of sadness, for Brian Silver died in 1997, just prior to the publication of his book, which I personally feel is a masterpiece of its kind.

In this book Professor Silver takes us through the history of science from Antiquity and before right up to the end of the 20th century. As well as chapters on all the major fields and discoveries of science from Pythagoras to Hawking we have fascinating snippets of biographical information about the science greats: Galileo, Copernicus, Newton, Herschel, Boyle, Hooke, Faraday, Lavoisier, Maxwell, Mendel, Darwin, Planck, Bohr, Heisenberg, Schrödinger, Einstein, Rutherford, Crick and so many more.

Their biographies themselves make fascinating reading, let alone their discoveries.

I read a book some years ago about Joseph Salk and the development of the polio vaccine. This was a hundred times more exciting than the most classy whodunnit, recounting the story of one of the greatest triumphs of medicine. Do you know anyone with polio? Nor do I, though I did when I was a kid in the 50s and of course there are many in “developing” nations still today, as we spend billions on CERN and not enough on medicine for the deprived of this world. Interwoven with the factual accounts of science and scientists considerable attention is given to philosophy and the placing of scientists and their discoveries in their historical context. A dry, purely factual book this isn’t, with the final chapters on cosmology, the origin of the universe and the meaning of life. (But don’t expect any answers to the last two!!)

Maths? Well, Professor Silver puts Michael Faraday right up there among the immortals. An astounding practical scientist/technologist, he made major discoveries in the field of electricity that affect the lives of everyone on the planet today. But his maths wasn’t too good! So much so that he pleaded with James Clerk Maxwell to write his equations in a more understandable way!

So you don’t have to be a great mathematician to do good things in science. If only I’d realized that before, I could have been another Faraday!

This book should be a standard textbook for all 6th formers, not just those doing science. I salute the brilliant and too-soon departed author.

By Chris Snuggs

Alistair Cooke

A tribute to Alistair Cooke of Letter from America

Many, many people of a certain age will remember with very fond affection the weekly BBC Radio broadcasts of Alistair Cooke under the title of Letter from America.

Alistair’s broadcast title, Letter from America, came to mind because I have been thinking for a couple of weeks about what to call my impressions about moving to Payson in Arizona.

Payson Perceptions? Pictures of Payson? Payson Profile? No! They all seemed naff!

But would it be too presumptuous to echo Cooke’s hugely famous programme title? Hopefully not.

(And regular readers will know that yesterday, the first Letter from Payson was published.)

I did a Google search on Alistair Cooke and immediately found the BBC web page devoted to him. For those that don’t know Cooke here are a few details from WikiPedia.

Born in 1908 in Salford, Lancashire, England, Cooke first started broadcasting for the BBC in 1946 and continued until the 20th February, 2004, a total of 58 years and making Letter from America the longest-running speech radio show in the world.

I hope the BBC will forgive me in reproducing here on Learning from Dogs the obituary that is on the Alistair Cooke website. He was a wonderfully interesting man and his weekly Letter from America seems to have been part of my complete life (in a sense it was).

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Reading Letter from America in the 1950s

He read his Letter from America for 58 years

Esteemed writer and BBC broadcaster Alistair Cooke, famed for his programme Letter From America, has died aged 95. BBC News Online looks back at his long and respected career.

For more than half a century, Alistair Cooke’s weekly broadcasts of Letter from America for BBC radio monitored the pulse of life in the United States and relayed its strengths and weaknesses to 50 countries.

His retirement from the show earlier this month after 58 years, due to ill health, brought a flood of tributes for his huge contributing to broadcasting.

Born in Salford, near Manchester, northern England, Alistair Cooke’s father was an iron-fitter and Methodist lay-preacher.

Alistair Cooke

Alistair Cooke: Consummate broadcaster

Winning a scholarship to Jesus College, Cambridge he read English, edited the undergraduate magazine, Granta, and founded the Cambridge University Mummers.

Alistair Cooke made his first visit to the United States in 1932, on a Commonwealth Fund Fellowship which took him to both Yale and Harvard universities.

Following his return to Britain, he became the BBC’s film critic and, in 1935, London correspondent for America’s National Broadcasting Corporation.

He returned to the United States in 1937 to work as a commentator on American affairs for the BBC. He made his home there and, in 1941, became an American citizen.

Alistair Cooke

A passion for jazz

March 1946 saw the first edition of American Letter, which became Letter from America in 1949.

The series was the longest-running series in history to be presented by a single person.

Alistair Cooke never decided what he was going to talk about until he wrote the script, made no notes during the preceding week and preferred to rely on his memory.

In an interview given at the time of the 3,000th edition of Letter from America, he appeared to have mixed feelings about the future of the United States.

“In America,” he said, “the race is on between its decadence and its vitality, and it has lots of both.”

Addressing Congress in 1973

He addressed Congress in 1973

Cooke led his listeners through the American vicissitudes of Korea, Kennedy, Vietnam, Watergate, Nixon’s resignation and Clinton’s scandals.

In all of this, Cooke pulled no punches. The lyricism of his broadcasting and the urbanity of his voice did not disguise his fears for America which he saw becoming a more violent society.

A liberal by nature, he reserved particular dislike for what he saw as the shallow flag-waving of the Reagan presidency.

Alongside working for the BBC and The Guardian, for which he wrote from 1945 to 1972, he developed a passion for jazz and golf and, as a film critic, he mixed with Hollywood stars.

As a commentator on history, Cooke was sometimes an eyewitness too. He was just yards away from Senator Bobby Kennedy when the latter was assassinated in 1968.

He was never as comfortable on television as radio but, by the 1970s, his hugely successful television series America recounted his personal history of his adopted homeland and won international acclaim, two Emmy Awards and spawned a million-selling book.

British or American?

The Queen awarded him an honorary knighthood in 1973 and the following year, for a journalist, he received the ultimate recognition – he was asked to address the United States Congress on its 200th anniversary.

He told his audience he felt as if he was in a dream, standing naked before them and there was only one thing he could find to say.

Teasing, he exclaimed to the assembled legislators, “I gratefully accept your nomination for President of the United States!”

Naturally, he brought the house down.

Many Britons thought he was American, but to the Americans he was the quintessential Brit, the man who brought them the best of British television as presenter of Masterpiece Theatre. For his part, he explained, “I feel totally at home in both countries.”

He impressed both audiences with his high quality work. With his unquenchable curiosity, Alistair Cooke remained for decades the consummate broadcaster, an elegant writer and a man of enormous wit and charm who made sense of the American Century.

By Paul Handover (still missing Letter from America on the radio.)

Europe Uber Alles, Pt 2.

A Guest post by Patrice Ayme

Part One ended saying:

The euro, long in planning by some European institutions, was introduced minimally, namely without the governmental apparatus generally associated to a currency. This is the way Europeans have found to progress peacefully towards greater harmony: do what is necessary, and nothing more than that, and do it with total consensus.

Everybody knew that a currency without a government to create and anchor it had never happened before, and was unlikely to endure.

Part Two continues

That fit the European federalists just right, and could not have escaped the understanding of Paris and Berlin. As it turned out, the PIIGS’ crisis is putting back Paris and Berlin, the historical engine of Europe, back on top, and this, for an excellent reason.

“PIIGS” stand for Portugal Ireland Iceland Greece Spain. All of them ran bubble economies, partially propelled by taxes from the richest European countries (including France and Germany). It became ridiculous as, for example, Ireland was getting European subsidies while the Irish were already way richer than those subsidizing them. (OK Iceland is not in the EU, yet, but it begged to enter the Eurozone, and it has disappeared the savings of countless Brits and Dutch, which means it has some outstanding business with the rest of Europe, that it will have to sort out, after executing a few more whales, guilty as charged.)

Some acknowledge the convenience of a common European currency and easier border transits, while remaining obsessed by what they view as gigantic differences between European countries. Those quaint nationalists and parochial types obsess that core differences between countries are so strong and deep-rooted that any form of real European union is a ridiculous concept. This is triply erroneous.

Read the rest of this Post

Europe Uber Alles

Welcome Patrice Ayme

On the 22nd March, Learning from Dogs had the pleasure of a Post from our first Guest Author, Elliot Engstrom. We were then doubly delighted to have Per Kurowski join us as our second Guest Author with his introductory Post.

Now we have the additional honour of welcoming Patrice Ayme to the growing ranks of Guest Author to Learning from Dogs.

Patrice, like Elliot and Per, also is a prolific blogger. He describes himself as:

I was born in Europe, raised in Africa, and lived in America. So doing, I learned to compare different cultures, even during my early childhood, and to appreciate superiority of many of their traits, even the most surprising. I consider myself Senegalese, and proudly so. I studied, and know, several languages, not just Latin, and several cultures, deeply, by living through and inside them for years. I have done formal studies in mathematics and physics at three leading Universities receiving the highest degrees, and putting me in a good position to learn to differentiate between hard knowledge and wishful thinking, differently from many a common philosopher. I am a specialist of non commutative geometry, arguably the most abstract field of knowledge in existence (even hard core logic, model theory, is used in my approach).

Here is Patrice’s first Guest Post for Learning from Dogs.

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GREEK TROJAN HORSE TO CONQUER BETTER EUROPEAN UNION

Abstract:

The European currency, the euro, is, foremost, a solution to a problem. War. All other problems, and the euro solves many, pale in significance relative to this one.

Many talk about “problems” with the euro, and, oozing with glee all over, perceive weakness. They are right, there is weakness, but it is not European weakness. Just the opposite.

What those skeptics are seeing with their uncomprehending neurology is the further construction of the European imperium, according to its core principle: fix what needs to be fixed, but with complete consensus of the parties concerned, which means do it just so. It appears messy, because it’s democratic, and before the people (demos) can use its kratos (power), it needs to think right, which means it has to argue thoroughly. It looks like squabbling, but it is thinking aloud. Europe is not built for some parties to gain advantage anymore (as it was with Napoleon, or Hitler), but to solve problems and gain opportunities for all.

The euro is, for the first time, used as a weapon against Europe’s enemies. Hence all the squealing. Far from weakening Franco-German resolve, the recourse to the IMF adds another layer of authority to the European Communities. When the IMF, speaking in the name of Franco-German taxpayers, tell restive exploiters in Greece that they have to pay more taxes (only 6 plutocrats declare more than one million euro income in Greece, and more than 500 professions can retire at 50 years of age, whereas Germany just brought up the retirement age to 67!), they will have to submit under orders (imperare, to use the Roman notion)

Elliot’s schooling

Elliot Engstrom – Guest Author

Elliot was ‘exposed’ to the Learning from Dogs readership on the 22nd March as our first Guest author. He wrote about the US Government and Poverty.

Elliot has one important distinction with respect to the other authors of this Blog; he is the right side of 30 years old!

He is going to use this perspective to reflect on schooling, something that most of us ‘aged’ peeps take for granted, assuming we can remember our school days! 😉

It promises to be a fascinating reflection.

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Setting the scene

I’ve had a plethora of experiences over the past 17 years of my life. I’ve made and lost friends, had romantic

relationships, read, traveled all around the world, lived in France, and done countless other things that I consider myself immeasurably blessed to have experienced.

Despite the fluidity of where these different experiences have taken me, my entire life since the age of four has had one characteristic in common – I have been a school student.

In the spirit of “Learning from Dogs,” I thought it might be interesting to reflect a bit upon the core dynamic between education (not learning, which is a far broader topic) and schooling.

I often ask myself just how effective the modern US schooling system is as a tool of education, and whether or not its costs outweigh its benefits. I hope to have at least a rough answer to this question in the final post of this series.

In the following three posts, I will examine three topics:

– In what ways does the modern schooling system function as a positive tool for education?

– What costs involved in modern schooling hinder its ability as an educative tool, and even make it a negative influence on students?

– Considering the analyses put forth in the first two posts, do the costs or benefits or this system outweigh the other? On the whole, are school and education complements or antagonists?

This series is going to be exciting for me because, to be quite frank, I have no idea what my final answer is going to be. I guess I’ll just have to stay tuned to see where my brain takes me – and so for you!

By Elliot Engstrom

20 years of the WWW

And a neat idea from the BBC

BBC Broadcasting House, Portland Place, London

For those living outside the UK (well so far as our IP address is concerned) watching BBC television via the Web has always been a bit of a challenge. Presumably because of the way that the BBC is funded, a Licence Fee (aka tax!) on those UK householders that wish to watch public broadcasted television, it is deemed ‘unfair’ if those outside the UK, who do not pay this Fee, have unfettered access to the Beeb’s programming. Thus if one attempts to access the BBC online from outside the UK you are met with the following message:

Currently BBC iPlayer TV programmes are available to play in the UK only, but all BBC iPlayer Radio programmes are available to you. Why?

However, the BBC have made a wonderful exception with regard to a series of programmes under the title of The Virtual Revolution. All about 20 years of the World Wide Web.

Most of, if not all, the key players of this last 20 years have been interviewed and the uncut footage of these interviews is here. Fascinating viewing.

And if you fancy making your own documentary using this material, under a unique BBC permissive licence, then here’s where to start.

Well done, the Beeb!

By Paul Handover

Burning the Bridges in Europe

A very far-sighted view of European collaboration from 12 years ago!

Once again, Learning from Dogs welcomes a guest post from Per Kurowski.

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I was intrigued by a recent Post on Learning from Dogs entitled Poor Old Europe. It included two commentaries from elsewhere about the state of Europe and how the feeling of trying to force, politically, very disparate countries together was still ever so dominant. It reminded me of an article that I wrote for my own Blog nearly 12 years ago just before the Euro came into effect. Reading it today is interesting, to say the least.

In just a few weeks, on the 1st of January 1999, eleven European countries will forsake the right to issue their own currency and accept the circulation within their boundaries of a common currency, the Euro. Monetary policy related to the Euro will be set by a European Central Bank. One fact that struck me as curious is that in all the abundant legislation that regulates this process, there is no mention whatsoever of how to manage the withdrawal or future regret of any of the union’s members.

The absence of alternatives in this case evidently represents a burning of the bridges, but this may be necessary to achieve credibility. There is no turning back and there is no doubt that this is a truly historical moment. As participants in a globalized world in which Europe has an important role, we must naturally wish all members luck, no matter what worries we might secretly harbor.

Until 1971, all money used throughout the history of humanity was backed in one way or another by something physical to which a real value was attributed. Sometimes the backing was direct, pearls for example, while in other cases it was indirect such as the right to exchange bills for a certain quantity of gold.

This physical backing in itself did not necessarily mean it consisted of something of fixed value. The value of a pearl, for example, is in itself subjective. The promise to exchange bills for gold did not guarantee anything either, since this promise could easily be voided by fraud. Whatever the backing was, however, it did at least offer the holder of the money the illusion that it was supported by something concrete.

In 1971, the United States formally abandoned the gold standard and the direct backing, however imaginary, disappeared. Since the Dollar is a legal currency, it could always be used to repay Dollar denominated debt. Today, however, in spite of the fact that the Dollars may have lost some of their purchasing power, a holder of excess Dollars can only hope that the Government of the United States will exchange his old bills for new ones of the same tenor.

This apparently precarious situation must be the raison d’etre of the motto printed clearly on the bills which states “In God We Trust”.

Since 1971, the real value of the Dollar as an element of exchange, has lost some of its value due to inflation. Today, we would need many more Dollars to buy the same houses, cars, movie tickets and gold than we would have needed in 1971. In spite of the above, with few exceptions such as the end of the ‘70s during which inflation increased dramatically, few would dare qualify the United States’ elimination of the gold standard as a failure.

The world’s economies have managed to increase international commerce drastically and with it, sustain a healthy growth rate. Many analysts would explain this phenomenon by saying that the discipline exacted by the gold standard represented a brake on international commerce. The growth rate registered in commerce after 1971 was the result of the release of this brake. Other more critical analysts sustain the thesis that, due to the fact that we have abandoned the discipline required by the gold standard, the world has accumulated gigantic accounts payable, which we may be coming due very soon.

I personally swing back and forth between amazement of the fact that the world has accepted such a fragile system and satisfaction that it actually has done so.

The Euro has one characteristic that differentiates it from the Dollar. This characteristic makes me feel less optimistic as to its chances of success. The Dollar is backed by a solidly unified political entity, i.e. the United States of America. The Euro, on the other hand, seems to be aimed at creating unity and cohesion. It is not the result of these.

The possibility that the European countries will subordinate their political desires to the whims of a common Central Bank that may be theirs but really isn’t, is not a certainty. Exchange rates, while not perfect, are escape valves. By eliminating this valve, European countries must make their economic adjustments in real terms. This makes these adjustments much more explosive. High unemployment will not be confronted with a devaluation of the currency which reduces the real value of salaries in an indirect manner, but rather with a direct and open reduction of salaries or with an increase of emigration to areas offering better possibilities.

What worries me most is the timing. The world is facing the possibility of a global recession. This will require very flexible economic and monetary policies. The fact that the search for initial credibility for the Euro is based on trying to assure markets around the world that the new currency will be guided by a philosophy closer to that of Bonn than that of Rome, probably goes against the best interests of the world.

Published in Daily Journal, Caracas, November 19, 1998

By Per Kurowski

Why do we cheat?

Behavioral Economist concludes that most people cheat.

In a very interesting video on the website TED, Dan Ariely, Professor of Behavioral Economics at Duke University, explains his research into why people think it is okay to cheat and steal.

Here is Ariely’s presentation from YouTube:

From his research, he concludes the following:

A lot of people will cheat.
When people cheat, however, they cheat by a little, not a lot.
The probability of being caught is not a prime motivation for avoiding cheating.
If reminded of morality, people cheat less.
If distanced from the benefits from cheating, like using “chips” instead of actual money in transactions, people cheat more.
If your in-group accepts cheating, you cheat more.

I quibble with the interpretation of some of his findings, which may justify a separate post on how people perceive what they do and do not know, but there are always issues of this sort with a given research project. Where I draw the line is when he expands his conclusions to include all of Wall Street and the stock market, which is totally beyond the scope and nature of his research.

On what basis does he draw this conclusion? As explained in this short video (as I have not read his book, though I’ve read excerpts and am familiar with the study upon which the book is based), Ariely claims that because stocks and derivatives are not in the form of money, they “distance people from the benefits of cheating,” which leads individuals who engage in the stock market to cheat more. He alludes to Enron as proof.

This is almost too silly to spend a lot of time on trying to discredit, but I fear that a lot of people who hear his talks or read his book may be lulled into accepting what he says about the stock market as true. But it is not! Enron is the exception, not the rule.

Companies who issue stocks are raising money to provide a good or service that is valued by society; they are rewarded by profits. Investors who buy and sell stocks, trade derivatives, and invest in portfolios are trying to make their money go further. They are trying to earn a return on their savings. Cheaters do not survive in the stock market, unlike the “consequences-free” classroom in Areily’s experiment.

On the other hand, these factors are in glaring abundance in the government: politicians never “see” the taxes they spend as the hard-earned income of the citizens. And the “benefits” of cheating, including power and privilege, are amorphous and vague, and couched in the so-called morality of “doing the greater good.” I’m surprised Ariely does not condemn the federal government using the same logic as his does the stock market.

His last take-away from this research project? That we find it “hard to believe that our own intuition is wrong.”

I think Dr. Ariely ought to apply that caveat to the conclusions he draws about his own research. Very interesting, very compelling, but his interpretation of the results as they apply to the stock market falls victim to the very same biases that he claims to find in others.

by Sherry Jarrell

Even more Tim Berners-Lee

The powerful spread of open data.

Tim Berners-Lee was, or is, the father of the Internet, that remarkable network that has done to connect millions together. Indeed, my personal view is that the Internet may be the only real tool that people have to protect and defend democracy.

I’m sure thousands know the background of Sir Timothy John “Tim” Berners-Lee, to give him his full name, an Englishman living in the USA.

There was an introduction to the the way that Sir Tim wants to see the web move in yesterday’s Post.

But Tim recently (February 2010) gave a talk in Long Beach, California, entitled The year open data went worldwide. This takes the concept much further.

It’s a fascinating presentation.

By Paul Handover

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