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Rhisiart Morgan Davies
Rhisiart Morgan Davies (4 February 1903 – 1958) was a Welsh physicist. He was born in Corris, Gwynedd, and attended schools in Machynlleth and Dolgellau before, in 1921, winning a scholarship to study physics at the University College of Wales, Aberystwyth. After graduating first-class honours in physics in 1924, he was appointed to the research staff team in H.M. Signals School in Portsmouth, but did not remain in the position for long, instead returning to Aberystwyth to work, initially, as an assistant lecturer in the physics department, before being appointed a lecturer in 1928. Whilst there he worked on a D.Sc. (Wales) degree for important work on the measurement of dielectric and elastic constants under dynamic conditions, which he completed in 1937. In 1938 he received a Leverhulme Research Fellowship award, enabling him to work in Cambridge, where he became one of the leading specialists in the study of 'stress waves'. He received a Ph.D. degree from Cambridge for his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of Phenomenon, phenomena, and usually frame their understanding in mathematical terms. They work across a wide range of Physics#Research fields, research fields, spanning all length scales: from atom, sub-atomic and particle physics, through biological physics, to physical cosmology, cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: Experimental physics, experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and Theoretical physics, theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corris
Corris is a village in the county of Gwynedd, Wales, about north of the town of Machynlleth. The village lies on the west bank of the Afon Dulas (which here forms the boundary with Powys), around that river's confluence with the Afon Deri. Corris railway station is the headquarters and museum of the Corris Railway, a preserved narrow gauge railway. The area has a community council. The community council system replaced the former parish council system and tackles local issues, as well as acting as a contact point between local government Local government is a generic term for the lowest tiers of governance or public administration within a particular sovereign state. Local governments typically constitute a subdivision of a higher-level political or administrative unit, such a ... and residents for information and resources on various issues. The community elects one member to represent the Corris/Mawddwy ward on Gwynedd Council. Besides Corris, the ward covers M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gwynedd
Gwynedd () is a county in the north-west of Wales. It borders Anglesey across the Menai Strait to the north, Conwy, Denbighshire, and Powys to the east, Ceredigion over the Dyfi estuary to the south, and the Irish Sea to the west. The city of Bangor is the largest settlement, and the administrative centre is Caernarfon. The preserved county of Gwynedd, which is used for ceremonial purposes, includes the Isle of Anglesey. Gwynedd is the second largest county in Wales but sparsely populated, with an area of and a population of 117,400. After Bangor (18,322), the largest settlements are Caernarfon (9,852), Bethesda (4,735), and Pwllheli (4,076). The county has the highest percentage of Welsh speakers in Wales, at 64.4%, and is considered a heartland of the language. The geography of Gwynedd is mountainous, with a long coastline to the west. The county contains much of Snowdonia (), a national park which contains Wales's highest mountain, Snowdon (; ). To the west, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machynlleth
Machynlleth () is a market town, community and electoral ward in Powys, Wales and within the historic boundaries of Montgomeryshire. It is in the Dyfi Valley at the intersection of the A487 and the A489 roads. At the 2001 Census it had a population of 2,147, rising to 2,235 in 2011. It is sometimes referred to colloquially as ''Mach''. Machynlleth was the seat of Owain Glyndŵr's Welsh Parliament in 1404,''The Welsh Academy Encyclopaedia of Wales''. John Davies, Nigel Jenkins, Menna Baines and Peredur Lynch (2008) pg527 and as such claims to be the "ancient capital of Wales". However, it has never held any official recognition as a capital. It applied for city status in 2000 and 2002, but was unsuccessful. It is twinned with Belleville, Michigan. Machynlleth hosted the National Eisteddfod in 1937 and 1981. Etymology The etymology of the name Machynlleth derives from ield, plainand . The ending 's' of is the cause of the 'c' of becoming 'ch': reflecting a stand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolgellau
Dolgellau (; ) is a town and Community (Wales), community in Gwynedd, north-west Wales, lying on the River Wnion, a tributary of the River Mawddach. It was the traditional county town of the Historic counties of Wales, historic county of Merionethshire until the county of Gwynedd was created in 1974. Dolgellau is the main base for climbers of Cadair Idris and Mynydd Moel which are visible from the town. Dolgellau is the second largest settlement in southern Gwynedd after Tywyn and includes the community of Penmaenpool. Etymology The name ''Dolgellau'' is a compound of 'water-meadow' and , the plural of 'a cell', giving the meaning 'water-meadow of cells'. The in the name was probably located within a bend at the confluence of the rivers Wnion and Aran. The may refer to monastic cells or merchant's stalls. The earliest recorded spelling (from 1254) is ''Dolkelew'', and a spelling ''Dolgethleu'' dates from 1294–5 (the ''thl'' is an attempt to represent Welsh ). Owain Glynd� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberystwyth University
Aberystwyth University () is a Public university, public Research university, research university in Aberystwyth, Wales. Aberystwyth was a founding member institution of the former federal University of Wales. The university has over 8,000 students studying across three academic faculties and 17 departments. Founded in 1872 as University College Wales, Aberystwyth, it became a founder member of the University of Wales in 1894, and changed its name to the University College of Wales, Aberystwyth. In the mid-1990s, the university again changed its name to become the University of Wales, Aberystwyth. On 1 September 2007, the University of Wales ceased to be a federal university and Aberystwyth University became independent again. The annual income of the institution for 2022–2023 was £130.8 million of which £22.2 million was from research grants and contracts, with an expenditure of £127.8 million. History In the middle of the 19th century, eminent Welsh p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portsmouth
Portsmouth ( ) is a port city status in the United Kingdom, city and unitary authority in Hampshire, England. Most of Portsmouth is located on Portsea Island, off the south coast of England in the Solent, making Portsmouth the only city in England not located primarily on the Great Britain, mainland. The city is located south-east of Southampton, west of Brighton and Hove and south-west of London. With a population last recorded at 208,100, it is the most densely populated city in the United Kingdom. Portsmouth forms part of the South Hampshire urban area with Gosport, Borough of Fareham, Fareham, Borough of Havant, Havant, Borough of Eastleigh, Eastleigh and Southampton. Portsmouth's history can be traced to Roman Britain, Roman times and has been a significant Royal Navy dockyard and base for centuries. Portsmouth was founded by Anglo-Norman merchant Jean de Gisors in the south-west area of Portsea Island, a location now known as Old Portsmouth. Around this time, de Gis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberystwyth
Aberystwyth (; ) is a University town, university and seaside town and a community (Wales), community in Ceredigion, Wales. It is the largest town in Ceredigion and from Aberaeron, the county's other administrative centre. In 2021, the population of the town was 14,640. Located in the Historic counties of Wales, historic county of Cardiganshire, means "the mouth of the River Ystwyth, Ystwyth". It has been a major educational location in Wales since the establishment of University College Wales, now Aberystwyth University, in 1872. The town is situated on Cardigan Bay on the west coast of Wales, near the confluence of the River Ystwyth and Afon Rheidol. Following the reconstruction of the harbour, the Ystwyth skirts the town. The Rheidol passes through the town. The seafront, with a Royal Pier, Aberystwyth, pier, stretches from Constitution Hill, Aberystwyth, Constitution Hill at the north end of the Promenade to the harbour at the south. The beach is divided by the castle. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge
Cambridge ( ) is a List of cities in the United Kingdom, city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambridgeshire and is located on the River Cam, north of London. As of the 2021 United Kingdom census, the population of the City of Cambridge was 145,700; the population of the wider built-up area (which extends outside the city council area) was 181,137. (2021 census) There is archaeological evidence of settlement in the area as early as the Bronze Age, and Cambridge became an important trading centre during the Roman Britain, Roman and Viking eras. The first Town charter#Municipal charters, town charters were granted in the 12th century, although modern city status was not officially conferred until 1951. The city is well known as the home of the University of Cambridge, which was founded in 1209 and consistently ranks among the best universities in the world. The buildings of the university include King's College Chap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Split-Hopkinson Pressure Bar
The split-Hopkinson pressure bar (SHPB), named after Bertram Hopkinson, sometimes also called a Kolsky bar, is an apparatus for testing the dynamic stress– strain response of materials. History The Hopkinson pressure bar was first suggested by Bertram Hopkinson in 1914 as a way to measure stress pulse propagation in a metal bar. Later, in 1949 Herbert Kolsky refined Hopkinson's technique by using two Hopkinson bars in series, now known as the split-Hopkinson bar, to measure stress and strain, incorporating advancements in the cathode ray oscilloscope in conjunction with electrical condenser units to record the pressure wave propagation in the pressure bars as pioneered by Rhisiart Morgan Davies a year earlier in 1948. Later modifications have allowed for tensile, compression, and torsion testing. Operation Although there are various setups and techniques currently in use for the split-Hopkinson pressure bar, the underlying principles for the test and measurement are the sam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1903 Births
Events January * January 1 – Edward VII is proclaimed Emperor of India. * January 10 – The Aceh Sultanate was fully annexed by the Dutch East Indies, Dutch forces, deposing the last sultan, marking the end of the Aceh War that have lasted for almost 30 years. * January 19 – The first west–east transatlantic radio broadcast is made from the United States to England (the first east–west broadcast having been made in 1901#December, 1901). February * February 13 – Venezuelan crisis of 1902–03, Venezuelan crisis: After agreeing to arbitration in Washington, the United Kingdom, Germany and Italy reach a settlement with Venezuela resulting in the Washington Protocols. The naval blockade that began in 1902 ends. * February 23 – Cuba leases Guantánamo Bay to the United States "in perpetuity". March * March 2 – In New York City, the Martha Washington Hotel, the first hotel exclusively for women, opens. * March 3 – The British Admir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
