Atoms and Molecules - Properties of Matter #2

Рет қаралды 11,074

Күн бұрын

An exploration of the atoms and molecules that make up our world.
Lawrence Bragg first describes and illustrates the structure of atoms and molecules. This is followed by a demonstration that conveys ideas not only on the size of atoms and molecules but also of the progressive development of microscopic instruments and techniques. Two classical experiments are performed in close-up, one demonstrating the wetting of oil molecules and the other showing Brownian motion
From the original programme notes:
Sir Lawrence Bragg at the Royal Institution of Great Britain Since 1826 a series of lectures, planned for young people, has been given at the Royal Institution during the fortnight after Christmas. These lectures, adapted to a juvenile auditory to use the nineteenth-century phase, were started as a new venture in science teaching. It is the tradition to illustrate the CHRISTMAS LECTURES with numerous experiments which are on an impressive scale and as far as possible of a novel type. Many experiments first shown in the Royal Institution theatre have become classical bench-experiments in schools and colleges, and many of the best popular scientific books have been based on CHRISTMAS LECTURES. A scheme was launched in 1955 to give corresponding lectures throughout the school year, because it seemed very desirable to use the facilities and traditions of the Institution to the full and thus make it possible for a larger audience to participate. The idea was proposed in the first place to a few science teachers in schools, and with their help it was started in a small way. The lectures had an enthusiastic reception, and the scheme soon grew to its present proportions and over twenty thousand young people now come to the lectures each year. The main idea behind them is to show experiments, illustrating the basic principles of science, which are on too large a scale or involve too complicated apparatus to be readily staged with school resources. The majority of the lectures are on physical subjects, but chemistry and biology are also represented. In 1965, Lord Bowden, who was then Minister of State in the Department of Education and Science, expressed a wish that the lectures given by Sir Laurence Bragg be recorded in the form of films, and arranged that a sum of money be earmarked for that purpose. The series Sir Lawrence Bragg at the Royal Institution is the result of his interest. The films have been commissioned by the Educational Foundation for Visual Aids and shot on the premises of the Royal Institution. At first an attempt was made to film the actual schools' lectures, but there were a number of drawbacks to this procedure. Ideal positions for the cameras were not possible in a crowded lecture room. An hour's talk is too long, the film had to be divided into three or four sections, and it was not easy to tailor beginning and ends to the sections. It was finally realised that it would be much better to shoot each film as a separate project, with no audience and complete freedom for the camera team to take the long shots and close-ups in the best way. The possibility of close-up shots is a great advantage, because it enables effects to be shown which it would be impossible to demonstrate in a large lecture room. The present series consists of sixteen films covering the schools' lectures dealing with magnetism, the properties of matter, and vibrations and waves. It is hoped to include electricity and other subjects in a further series. In the main, the experiments are those actually shown in the schools' lectures, modified for filming where desirable. The action before the camera is in each case carefully rehearsed so that the performance of the experiment is seen as clearly as possible. No attempt however has been made to prepare a 'script'. The talk is quite informal, not a prepared one, in the belief that it will be fresher and more interesting if given in this way. It is hoped that the imperfections, inevitable in an impromptu talk, will be overlooked for the sake of its more personal nature.
Crown copyright information is reproduced with the permission of the Controller of HMSO and the Queen’s Printer for Scotland.
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Пікірлер: 18

@pipatron 2 жыл бұрын

It's a shame this only has a couple of thousands of views. Really pleasant to watch.

@Kaotik199O Жыл бұрын

I guess people rather watch “TikTok” and fill their brains 🧠 with that nonsense that gives them the attention span of a gold fish Than watch something wholesome and educational like that 🙌🏻

@deltapee9259 Жыл бұрын

That camphor stuff was weird! These are much better science videos than I ever got to see in school. This guy us an expert at explaining very complex concepts. He sounds good at 1.5 speed... if you speed up the video.

@jaydenwilson9522 9 ай бұрын

You dude are an amazing man or woman and I love you a lot for uploading all these... I just recently found the "truth" and these have helped me conceptualise our universe more clearly than many others combined.

@ALoonwolf Жыл бұрын

Something people seem to overlook is the fact that molecules are held together with electrons and that electrons are easily lost. The Earth has an enormous reservoir of spare electrons, and all plants and animals pick them up. Except most modern humans who are insulated from them...

@MitzvosGolem1 5 жыл бұрын

excellent ,Cheers

@franzliszt3195 Жыл бұрын

Bragg's vids should be shown in grade school.

@davidmiller4942 4 жыл бұрын

What year was this made? It's awesome

@pipatron 2 жыл бұрын

1965 I think, or very near

@emorysmith197 Жыл бұрын

Cool

@terminate5888 6 жыл бұрын

nice

@bigmack2141 4 ай бұрын

This guy is Sir William Bragg, look him up, see what a brilliant mind he had, and a wonderful fun guy his daughter reports. DNA, he didn’t discover it but his research led the way