History of radar

Early history[ edit ] The earliest evidence of human occupation in Hertfordshire come from a gravel pit in Rickmansworth. The finds of flint tools date back , years, [2] long before Britain became an island. People have probably lived in the land now called Hertfordshire for about 12, years, since the Mesolithic period [3] in Ware making Ware one of the oldest continuously occupied sites in Europe. The Romans besieged him at Wheathampstead, and partly because of the defection of the Trinovantes whose King Cassivellaunus had had murdered , the Catuvellauni were forced to surrender. Cunobelinus became king of the Catuvellauni in 9 or 10 CE and ruled for about thirty years, [17] conquering such a large area of Britain that the Roman writer Suetonius called him Britannorum Rex in Latin “King of Britain”. When the Romans took over, their settlement, laid out in 49 CE, [21] became known as Verulamium. Alban , a Roman army officer who became Britain’s first Christian martyr after his arrest at Chantry Island , died in the 3rd or 4th century and gave his name to the modern town of St Albans. The ancient trackway, the Icknield Way also runs through Hertfordshire.

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The information I have indicates that Charles was a millwright. Any information would be helpful. Elizabeth – Henry , Charles, Caroline and Daniel may have been others. ANY info would be great, many thanks Leyfhon of Gloucester area I am looking for information on William Leyfhon, born in the last quarter of the 19th century.

A SHORT HISTORY OF AUSTRALIA. CHAPTER I – THE DAWN OF DISCOVERY Early maps of the southern regions–Speculations as to Antipodes– Discovery of sea-route to the East Indies–Discovery of the Pacific– The Portuguese and Spaniards–Discovery of the Solomon Islands–Quiros at the New Hebrides–Torres Strait.

If you would like us to send you an email whenever we add new stock please enter your email address below and click GO. The phrase basket-type hilts refers to a large group of hilts which provide a degree of protection to the hand and wrist. Basket-hilted swords have featured prominently among British military edged weapons over the past five centuries, from the Wars of the Roses in the mid fifteenth century to the period immediately after the second Boer War of the early twentieth century.

In setting out to give a full account of the hilt type, and the many variants within it, the first necessity has been to provide an appropriate terminology to employ in cataloguing and describing individual examples. The book, well illustrated with black and white illustrations, falls into several parts, dealing successively with general aspects of various hilt types and discussion of typological methodology, the three major groups of basket-hilted swords, the diverse group of incomplete basket hilts, ‘mortuary’ hilts, and hilts closely related to ‘mortuary’ hilts.

His large collection of British military swords may be seen at Brown University, donated by the author. The best book on British swords to be published for over a generation. Was born in in St. From – he studied in Vhuteine??

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Unused glossy Ekc photo postcard, caption reproduces signature, excellent except for small corner crease at lower left. Many credits – include: From – she appeared in a few film short subjects. She played Mademoiselle Gobette in the ‘Madame la President’.

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But the instrument in its smaller sizes did, in many other countries around The Mezzetti brothers from Budrio moved to France and England; one made ocarinas in Paris, the other popularized the instrument in Britain. These are the Mezzettis I have all tunable: Tunable Mezzetti ocarina in fitted case; from Jafafa Hots’s photo page Even further upmarket was this de luxe instrument, perhaps by Ercole Roda in France, which had silver-inlaid fingerholes: Tunable ocarina in fitted case with silver-inlaid fingerholes; from a auction at Gardiner Houlgate in Bath, England Tunability was achieved by pulling a metal tube out, increasng the internal volume of the instrument.

It wasn’t very useful – the range it could usefully cover was only about a quartertone, and tuning slides are rarely made now. Ocarinas were brought to Bavaria by Italian migrant workers and became a standard folk instrument there, and were made in Austria on a large scale. While sheltering in a bomb crater from an Allied air attack, he realized that the clay in the crater could be used to make ocarinas, and sold them to his captors to buy food.

The story in Italian is on his memorial page. From Austria they made their way to the US, and were sold all across the country, as in this section from the mail order catalogue from Montgomery Ward, advertising Austrian ocarinas: They also got to Japan, Romania and Bulgaria. Romania probably made more of them than any country outside Italy and the instrument is still played there at a professional level.

Stefan Popescu, Romania, ; image from eliznik. Ocarina used in Namibia in In America, the Italian ocarina band was adapted at least in one instance into a version of the old military flute band dating back to colonial times:

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However, much has happened since it went up, including the Blogger outage. Scroll down for a report on that. More new posts will be added below this one.

As a follow-up to Tuesday’s post about the majority-minority public schools in Oslo, the following brief account reports the latest statistics on the cultural enrichment of schools in Austria. Vienna is the most fully enriched location, and seems to be in roughly the same situation as Oslo. Many thanks to Hermes for the translation from

Early history[ edit ] The earliest evidence of human occupation in Hertfordshire come from a gravel pit in Rickmansworth. The finds of flint tools date back , years, [2] long before Britain became an island. People have probably lived in the land now called Hertfordshire for about 12, years, since the Mesolithic period [3] in Ware making Ware one of the oldest continuously occupied sites in Europe.

The Romans besieged him at Wheathampstead, and partly because of the defection of the Trinovantes whose King Cassivellaunus had had murdered , the Catuvellauni were forced to surrender. Cunobelinus became king of the Catuvellauni in 9 or 10 CE and ruled for about thirty years, [17] conquering such a large area of Britain that the Roman writer Suetonius called him Britannorum Rex in Latin “King of Britain”.

When the Romans took over, their settlement, laid out in 49 CE, [21] became known as Verulamium. Alban , a Roman army officer who became Britain’s first Christian martyr after his arrest at Chantry Island , died in the 3rd or 4th century and gave his name to the modern town of St Albans.

History of Hertfordshire

Tweet Below is a list and description of the most recent genealogy records for England and Wales see list of most recent records for other countries. Many of these records can be searched using our free Genealogy Search Engine. It is packed with useful information for anyone tracing their English ancestors. Included with this release are the national directory which covers the entire country and the South Wales directory.

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Could not subscribe, try again laterInvalid Email Hundreds of sports stars, celebrities, scientists, community champions and politicians have been recognised in the New Year’s Honours. Overall an astonishing 1, people are honoured by the Queen for services to the arts, charity, business and more. Read More Hillsborough crusader: Here are some of the big names who’ll be dressing up for a trip to Buckingham Palace – plus a full list of all those getting a gong.

The honours in numbers There are 1, honours and women make up more than half of those on the list, with earning an award. He has had a fantastic year after winning gold at Rio

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Significance[ edit ] The place of radar in the larger story of science and technology is argued differently by different authors. On the one hand, radar contributed very little to theory, which was largely known since the days of Maxwell and Hertz. Therefore, radar did not advance science, but was simply a matter of technology and engineering. Maurice Ponte, one of the developers of radar in France, states: The fundamental principle of the radar belongs to the common patrimony of the physicists; after all, what is left to the real credit of the technicians is measured by the effective realisation of operational materials.

From a review of his book: Because of radar, astronomers can map the contours of far-off planets, physicians can see images of internal organs, meteorologists can measure rain falling in distant places, air travel is hundreds of times safer than travel by road, long-distance telephone calls are cheaper than postage, computers have become ubiquitous and ordinary people can cook their daily dinners in the time between sitcoms, with what used to be called a radar range.

Heinrich Hertz[ edit ] In — the German physicist Heinrich Hertz conducted his series of experiments that proved the existence of electromagnetic waves including radio waves , predicted in equations developed in —4 by the Scottish physicist James Clerk Maxwell. In Hertz’s experiment he found that these waves would transmit through different types of materials and also would reflect off metal surfaces in his lab as well as conductors and dielectrics.

The nature of these waves being similar to visible light in their ability to be reflected, refracted, and polarized would be shown by Hertz and subsequent experiments by other physicists. In he and a British engineer called Charles Samuel Franklin used short-waves in their experiments, critical to the practical development of radar. I also described tests carried out in transmitting a beam of reflected waves across country It [now] seems to me that it should be possible to design [an] apparatus by means of which a ship could radiate or project a divergent beam of these rays in any desired direction, which rays, if coming across a metallic object, such as another steamer or ship, would be reflected back to a receiver screened from the local transmitter on the sending ship, and thereby immediately reveal the presence and bearing of the other ship in fog or thick weather.

A Short History of Australia

Category Transcript The pages below are initially ordered according to the dates on which they were added to the site most recent first. The order can be changed by clicking on the symbol beside a column heading: Click on the arrow symbol again to reverse the order.

The history of radar (where radar stands for RAdio Detection And Ranging) started with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell’s seminal work on r, it was not until the early 20th century that systems able to use these principles were.

Jackie Ramsbottom jax googlemail. The page has been set up so that we can keep regular Notices of current blogs on the site which we will try and do by linking across. Occasionally we will also put on old blogs that may bear relation to current topics etc, also one of the main advantages is so that members can participate and comment and add information themselves should they so wish.

Also please bear in mind that a lot of people who make contributions to the blog do not wish to have their contributions mirrored across to “Facebook” and those will only be put on the blog alone. Just added or about to 19th November Just added two fabulous paintings kindly shared to us by Haslingden’s Liz Taylor. Also she has included 5 fabulous paintings done by Haslingden people. Law and His Orchestra which were kindly shared to us by the Belshaw Family.

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