History[ edit ] The Greek botanist Theophrastus ca. In , the German-American Jacob Kuechler — used crossdating to examine oaks Quercus stellata in order to study the record of climate in western Texas. Kapteyn — was using crossdating to reconstruct the climates of the Netherlands and Germany. Douglass sought to better understand cycles of sunspot activity and reasoned that changes in solar activity would affect climate patterns on earth, which would subsequently be recorded by tree-ring growth patterns i. Wood Diagram of secondary growth in a tree showing idealised vertical and horizontal sections. A new layer of wood is added in each growing season, thickening the stem, existing branches and roots, to form a growth ring. Horizontal cross sections cut through the trunk of a tree can reveal growth rings, also referred to as tree rings or annual rings. Growth rings result from new growth in the vascular cambium , a layer of cells near the bark that botanists classify as a lateral meristem ; this growth in diameter is known as secondary growth. Visible rings result from the change in growth speed through the seasons of the year; thus, critical for the title method, one ring generally marks the passage of one year in the life of the tree.
Search 25 Best Things to Do in Louisville, Kentucky The largest city in Kentucky, Louisville is a unique vacation destination offering many fun things to see and do. Kentucky Derby Museum The Kentucky Derby Museum celebrates, engages, and educates visitors about the extraordinary experience that is the Kentucky Derby. One of the main attractions in the Louisville region, the Kentucky Derby Museum showcases the history, hospitality, and tradition of the world-renowned event.
The Kentucky Derby Museum is one of the top Louisville attractions.
Speed Dating and Decision-Making: Why Less Is More. der Linden is a doctoral researcher in social experimental psychology at the London School of Economics and Political Science. His research.
That same year in Germany, engineer Konrad Zuse built his Z2 computer, also using telephone company relays. Their first product, the HP A Audio Oscillator, rapidly became a popular piece of test equipment for engineers. Stibitz stunned the group by performing calculations remotely on the CNC located in New York City using a Teletype terminal connected via to New York over special telephone lines. This is likely the first example of remote access computing. Konrad Zuse finishes the Z3 Computer The Zuse Z3 Computer The Z3, an early computer built by German engineer Konrad Zuse working in complete isolation from developments elsewhere, uses 2, relays, performs floating point binary arithmetic, and has a bit word length.
The Z3 was used for aerodynamic calculations but was destroyed in a bombing raid on Berlin in late Zuse later supervised a reconstruction of the Z3 in the s, which is currently on display at the Deutsches Museum in Munich. Hundreds of allied bombes were built in order to determine the daily rotor start positions of Enigma cipher machines, which in turn allowed the Allies to decrypt German messages.
The basic idea for bombes came from Polish code-breaker Marian Rejewski’s “Bomba.
By the time Bell was 38, he was living in Washington, D. He made the idyllic Canadian village his home for nearly 40 years, until his death. His grandfather had been an elocutionist , and his father, Melville, developed a system called Visible Speech, a collection of written symbols designed to help the deaf while speaking.
Speed dating is a formalized matchmaking process whose purpose is to encourage eligible singles to meet large numbers of new potential partners in a very short period of time. It was created in by Antony Beilinsohn (a Los Angeles based television executive) after his Rabbi, Yaacov Deyo, encouraged him to conceive of innovative ways for eligible jewish singles to meet and marry.
The writing medium is graphite, a form of carbon. Writing instruments made from sticks cut from high quality natural graphite mined at Cumberland in England and wrapped in string or inserted in wooden tubes came into use around By , pencils were produced in Nuremberg, in what is now Germany, apparently by gluing sticks of graphite into cases assembled from two pieces of wood.
By the early 18th century, wood-cased pencils that did not require the high quality graphite available only in England were produced in Nuremberg with cores made by mixing graphite, sulfur and various binding agents. These German pencils were inferior to English pencils, which continued to be made with sticks cut from natural graphite into the s. According to Petroski pp.
The piece of wood into which the leads were placed has a groove about twice as deep as the thickness of the rod of lead. A slat of wood was then glued in over the lead to completely fill the groove, and the pencil was ready to be finished to the desired exterior shape. Hagley Museum and Library In , Dixon set up a new factory just outside New York City that used graphite to manufacture crucibles for melting metals, polish for cast iron stoves, and, on a limited scale, pencils.
However, most lead pencils sold in the U.
Share 37 shares But the Science Museum had an equally impressive reply: Plus volcanoes and earthquakes And vampire fish,’ the Natural History Museum replies The war of words escalated with each museum naming items that could defeat the other.
How to Find Love in 4 Minutes: The Science of Speed Dating Greatist News examines and explains the trends and studies making headlines in fitness, health, and happiness. Check out all the news here.
Handy farm devices and how to make them. Orange Judd Company, Canada. Tools of their trades: An oral history of men at work c. Additional thoughts about grafting tools. Scythe anvils and scythe spellings. The origins of the wheelbarrow. The history of old time farm implement companies and the wrenches they issued including buggy, silo, cream separator, windmill, and gas engine companies.
R-Lucky Star Ranch, Rt. Hand-held green corn shredders. A compendium of hay knives. Chronology of hay-knife articles in The Chronicle. A long, deep furrow:
Lotus Books (One for the Library)
Sibiu’s Towers Turnurile Sibiului For hundreds of years, this walled town in the heart of Transylvania was one of the most powerful and prosperous strongholds in Europe. Surrounded by imposing walls, Sibiu’s original fortifications included 39 defensive towers, five bulwarks, four gates and five artillery batteries. Although the entire network is remarkably well-preserved, the best-maintained section is the southeastern side which has been reinforced several times throughout the centuries since attacks most often came from that direction.
Three 15th century towers have withstood the test of time: The th century Great Tower Turnul Gros was the site of Sibiu’s first theatrical performance, staged in The Great Square is the site of the Roman-Catholic church and the Brukenthal Palace, where you will find one of Romania’s most important art collections.
Although with similarities with a different author there seemed an additional richness in this edition. The author called attention to the geography and topography of the nation and its impact on the development of the car. Handling and breaking were functional requirements. The Mille Miglia and Tagia Florio are explained in the context of the contributions to the respective local economies and relative ease of road closure in sparsely populated regions.
Ludvigsen also bravely makes reference to the Futurist Movement and the links between art, progress, technology and the wider impact on Italy as it entered industrialisation. In particular offering a description of the Fiat works. This was an ambitious five storey building with a test track on the roof. It was designed by Giacomo Matte-Trucco. In a similar vein was the Monza Motor racing circuit started c
Speed dating at the Science Museum set to spark young heritage partnerships
Being awarded a fellowship to attend the seminar, which was jointly funded by the Andrew W. Mellon Foundation and the National Endowment for the Humanities, enabled me to take the time to read deeply in the literature of the profession, where I discovered that the failings I had been seeing in American archival institutions were not primarily a consequence of bad management, but of the fact that the best methods of the profession were inadequate to the task at hand.
Since , I have not pursued this research directly and the work has remained dormant. I have spoken about it publicly from time to time, but have not forced others or myself to deal with its conclusions. Increasingly I have felt that this is irresponsible of me, and am glad to be bringing it out for public scrutiny at this time. In the process, the first four chapters have been substantially rewritten, but the underlying structure of the argument, and its conclusions, have not been affected.
It was used for storing foodstuffs. This one from uniquely combines two different ideas: India was a global centre for their manufacture. This one was made in by Lala Balhumal, one of the finest astrolabe makers of his day. One of the instruments on board was this camera, which captured striking colour images of Mars and its moons. Mangalyaan was the first satellite that India has sent to another planet. He observed that sunspots are complex, ever-changing and move along the lines of a magnetic field.
Battery and Energy Technologies
Speed is the distance traveled divided by the time of travel. For example; if you were to travel a distance of 10 miles in 2 hours time, then your average speed equals 5 miles per hour. Most textbooks bold face the units that also contain direction information. All quantities that are not vectors are called scalars. Time is a scalar quantity.
About Social Science. Social Science is The Discovery’s wildly popular adults-only, brain building event series featuring intriguing science demos, hands-on labs, a live DJ, and beer, wine, and sweet and savory bites from Whole Foods Market Reno.
Scientists know from fossil remains that the horse originated and evolved in North America, and that these small 12 to 13 hand horses or ponys sic migrated to Asia across the Bering Strait, then spread throughout Asia and finally reached Europe. The drawings in the French Laseaux caves, dating about 10, B. This has led anthropologists to assume that Plains Indians only acquired horses after Spaniards accidentally lost some horses in Mexico, in the beginning of the XVIth 16th century, that these few head multiplied and eventually reached the prairies.
Post-glacial remains Some biologists have pointed out that Elders could indeed be correct, for while the mammoth and other Pleistocene mammals died out during the last Ice Age in both continents, if the horse survived in Eurasia, there is no reason for it to have become extinct in North America, especially given similar environment and climate on the steppes and prairies.
In Eurasia, scientists have been able to trace the domestication of the horse through extensive archaeological work, fossil remains, burials, middens garbage heaps and artifacts. Such finds have, for instance, enabled them to determine that peoples there ate horses, buried them with notables, and helped them establish that men started riding about 3, B.
By comparison, very little archaeological work has been done on the prairies due in large part to budget constraints. There are also other problems. Whereas the Seythians, for instance, left magnificent gold jewelry which can be dated to B. So that if both these cultural traits, in regards to horses and dogs, are ancestral, it would be useless to seek horse remains in garbage heaps. Bodies were placed on scaffolds on the prairies, and the bones were collected, cleaned and buried about one year later.
As there is no tradition of ceremonial horse burials, with or without humans, one can assume that horses were simply left to die on the prairies where wolves and other scavengers would have efficiently dealt with their carcasses, thereby leaving scientists, once again, with few, if any, remains to discover.
To the end of the room and through a small doorway and you were into a more labyrinthine part of the museum with vintage cars, aircraft parts, the last tram to run in Birmingham along with sound when a button was pressed, of course and — one of my personal favourites — ten to 15 radios dating back some years or so with a little control panel. A tune would be playing and by pressing a series of buttons, the tune would switch to playing through the corresponding radio so you could hear the differences in sound quality over the years.
I must have spent a day or two every holiday mooching around inside the Museum and knew every exhibit inside out the sands of time, however, have gradually eroded this knowledge, sadly. As mentioned elsewhere, I left Birmingham for many years and when I returned at the close of the s the Museum of Science and Industry was no more — closed for good and a new pretender to the name was emerging on Curzon Street to be opened as ThinkTank in , part of the Millennium Point development.
Furthermore, take a look at the photographs below to see how many buildings have been retained at the site during the preparation for the Newhall Square development. The demolition and clearance workd at the Museum site began in October and is now virtually complete as can be seen below.
Speed dating at the Science Museum set to spark young heritage partnerships. At the Painted Hall – young people are key part of heritage projects. 02/10/ Youth groups and heritage organisations are being brought together to help spark heritage partnerships.
In her travels, Allen has explored parts of North and Central America as a student of biology, wildlife ecology and land conservation. Marlowe competed with the U. This Salt Lake City native has traveled the world with her expertise in sticky landings, becoming the only athlete in Utah history to become a first ballot hall of famer in both the Utah Sports Hall of Fame as well as the Crimson Club Hall of Fame.
Queen Farina A pair of beekeepers, expert in the sticky science of beekeeping Smack your lips with the taste and texture of one of the stickiest—and tastiest—of foods, as the founders of Queen Farina explore the myriad uses of raw honey. As Certified Natural Growers, Johnson and Nielson cultivate bee-friendly environments, harvest raw honey, and share its infinite uses all within the Salt Lake community.
Join these sticky sisters as they share the science of honey and its growing importance in our world. Rick Vance A mountaineer with an eye for traversing rock faces Stick with Rick Vance for a crash course in climbing as he shares some of the magic of a 20 year career in mountaineering. Vance earned his climbing chops as a rock guide, a rope-access technician and has training in arborist techniques and high-angle rescue. As the Technical Director of Petzl Climbing Gear, Vance answers questions about climbing equipment and its uses for a living—come put his knowledge to the test!
Stewart is a professor of Bioengineering at the University of Utah and is currently breaking ground with his research on biological adhesives that function under wet conditions such as the Marine Sandcastle Worm, who makes his sticky living pasting together a sandcastle home underwater! Stewart earned his PhD in Biochemistry at the University of California, Santa Barbara and has been working with worms, larvae and other sticky biological wonders ever since.