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File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 118
Function: loadXML

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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File: /opt/rh/httpd24/root/var/www/yba2/index.php
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Function: require_once

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Filename: controllers/Article.php

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Backtrace:

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 118
Function: loadXML

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 77
Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: controllers/Article.php

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Backtrace:

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 118
Function: loadXML

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 77
Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: helpers/article_helper.php

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 129
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 77
Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 129
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: helpers/article_helper.php

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 137
Function: _error_handler

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: helpers/article_helper.php

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 140
Function: _error_handler

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 77
Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: helpers/article_helper.php

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 251
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 251
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: helpers/article_helper.php

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 297
Function: _error_handler

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 77
Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

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Filename: helpers/article_helper.php

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 251
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: require_once

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 251
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: require_once

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Function: _error_handler

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: require_once

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 322
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: xsltTransform

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Function: require_once

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File: /opt/rh/httpd24/root/var/www/yba2/application/helpers/article_helper.php
Line: 322
Function: load

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
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Function: require_once

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Function: _error_handler

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 133
Function: transformToXml

File: /opt/rh/httpd24/root/var/www/yba2/application/controllers/Article.php
Line: 77
Function: xsltTransform

File: /opt/rh/httpd24/root/var/www/yba2/index.php
Line: 315
Function: require_once

GRIFFITHS, EZER (1888 - 1962), ffisegydd | Y Bywgraffiadur Cymreig

GRIFFITHS, EZER (1888 - 1962), ffisegydd

Enw: Ezer Griffiths
Dyddiad geni: 1888
Dyddiad marw: 1962
Rhiant: Anne Griffiths
Rhiant: Abraham Lincoln Griffiths
Brawd neu chwaer: Roosevelt Griffiths
Brawd neu chwaer: Jenkin Arthur Griffiths
Brawd neu chwaer: Edgar A. Griffiths
Rhyw: Gwryw
Galwedigaeth: ffisegydd
Maes gweithgaredd: Gwyddoniaeth a Mathemateg
Awdur: Evan David Jones

g. yn Aberdâr, Morg., yn un o naw plentyn a'r hynaf o chwe mab Abraham Lincoln Griffiths a'i wraig Anne, 28 Tach. 1888. Addysgwyd ef yn ysgol uwchradd Aberdâr, a Choleg Prifysgol Deheudir Cymru, Caerdydd, lle y graddiodd yn B.Sc. gyda dosbarth cyntaf mewn ffiseg ac ennill ysgoloriaeth ymchwil ac yn ddiweddarach gymrodoriaeth Prifysgol Cymru a gradd D.Sc. Yn 1915 ymunodd â'r National Physical Laboratory yn Teddington lle y treuliodd weddill ei oes yn ymgodymu â phroblemau gwres. Daeth yn un o'r prif awdurdodau ar ynysiad gwres, anweddiad, a materion cysylltiol a fu'n gyfraniad gwerthfawr i fyd diwydiant. Yn 1923 yr oedd yn un o dîm a ddanfonwyd i Awstralia i astudio problem cludo afalau drwy wres y trofannau i Brydain. Saith ml. yn ddiweddarach aeth i Seland Newydd i ddelio â phroblemau allforio cig oen i'r wlad hon. Bu hefyd yn astudio problemau ynglŷn â'r cymylau tarth a ffurfir yn sgîl awyrennau, a bu'n ymchwilio i'r ffyrdd gorau i addasu tanciau at wasanaeth yng ngwres anialwch Libya yn ystod Rhyfel Byd II. Dyfarnwyd medal Moulton iddo ef ac R.W. Powell am eu cywaith ar anweddiad dŵr oddi ar arwynebau. Etholwyd ef yn F.R.S. yn 1926 a chafodd yr O.B.E. yn 1950. Ymddeolodd o'i swydd fel Prif Swyddog Gwyddonol hynaf adran ffiseg y Labordy Ffisegol Cenedlaethol yn 1953.

Bu f. yn ddibriod yn Teddington, 14 Chwef. 1962. Cyhoeddodd lyfrau — Methods of measuring temperatures (1918, ail arg. 1925, 3ydd arg. 1947), Pyrometers (1926), a Refrigeration principles and practice (1951) — a llu o bapurau technegol yn ei faes.

Brodyr iddo oedd Edgar A. Griffiths, ffisegydd i lywodraeth De Affrig, Jenkin Arthur Griffiths, gol. Colliery Guardian, a Roosevelt Griffiths, darlithydd mewn meteleg, Coleg y Brifysgol, Abertawe.

Awdur

Dyddiad cyhoeddi: 1997

Hawlfraint Erthygl: