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Helo Cyfeillion y Gwanwyn,

Diolch am rannu eich sylwadau gyda'r data tywydd wythnos dwytha. Rwyf wedi atodi rhai yn isod. Mae llawer ohonoch yn ddweud bod y tywydd wedi oeri a bod 'na mwy o law. Mae rhai ohonoch chi hyd yn oed wedi cael eira! Dyma pam dwi am esbonio sut mae meteorolegwyr (gwyddonwyr tywydd) yn mesur eira. 

Mae mesur faint o law sy’n disgyn yn hawdd o’i gymharu â mesur faint o eira sy’n disgyn. Fydd eira ddim yn bihafio! Bydd yn aml yn cael ei chwythu gan y gwynt ac yn lluwchio, sy’n golygu bod yr eira’n ddwfn mewn mannau ond yn llawer llai dafliad carreg i ffwrdd. Oherwydd bod yr eira’n disgyn yn anghyson, bydd y mesuriadau o’r llefydd yma’n anghywir! Dyna pam mae’n rhaid mesur mewn mannau gwastad, agored ymhell o ble fydd eira’n lluwchio. Bydd eira hefyd yn chwarae gemau gyda’r Meteorolegwyr sy’n ceisio ei fesur – bydd yn toddi’n ddŵr, cyn rhewi fel iâ. Felly dyw’r eira sy’n cael ei fesur ddim bob tro yn cyfateb i faint o eira sydd wedi disgyn. Mae eira newydd yn disgyn ar ben hen eira hefyd, ac mae’n anodd dweud faint o eira sydd wedi disgyn o un diwrnod i’r llall. 

Mae’n rhaid i’r meteorolegwyr gofio holl driciau’r eira a meddwl am ffyrdd i ddarganfod faint o eira sydd wedi disgyn. Byddan nhw’n edrych ar gwymp eira (faint o eira sy’n disgyn mewn diwrnod) a dyfnder eira (cyfanswm dyfnder yr eira, hen a newydd). Un ffordd o fesur cwymp eira yw gyda ffon bren. Bydd y meteorolegwr yn gosod y pren mewn lleoliad agored lle na fydd eira’n lluwchio ac yn mesur yr eira bob chwech awr. Drwy glirio’r eira o’r pren ar ôl ei fesur, dim ond eira’r diwrnod hwnnw fydd yn cael ei fesur, a gall y gwyddonydd ddweud faint o eira sydd wedi cwympo ar y diwrnod hwnnw. 

Gallwn ni hefyd fesur eira wedi toddi ar ffurf dŵr. Gallwch chi felly ddefnyddio’ch mesurydd glaw i fesur cwymp eira. Os taw dim ond ychydig o eira sy’n cwympo, bydd yn toddi yn y mesurydd beth bynnag, ond os yw hi’n bwrw’n drwm, ewch â’r mesurydd i mewn ac aros iddo doddi’n ddŵr. Gallwch chi wedyn fesur y dŵr fel rydych chi wedi’i wneud bob wythnos, a’i gofnodi fel glawiad yn eich cofnodion tywydd. 

Os oes eira ar lawr a bod digon o amser i arbrofi, beth am fynd ati i fesur dyfnder yr eira? Y cyfan sydd ei angen arnoch chi yw pren mesur (neu pren eira os ydych chi am siarad fel gwyddonydd gwych!). Gwthiwch y pren i’r eira tan ei fod yn cyffwrdd y ddaear a chofnodi pa mor ddwfn yw’r ddaear fesul milimedr. Rhaid i chi fesur o arwyneb gwastad (fel mainc) mewn lle agored lle nad yw’r eira’n lluwchio. Rhaid i chi gofnodi o leiaf tri mesuriad i gyfrifo dyfnder cyfartalog yr eira lleol. Cyfrifwch y cyfartaledd drwy adio’r cofnodion gwahanol a’u rhannu gyda’r nifer o gofnodion. Os ydw i’n cofnodi tri dyfnder o 7cm, 9cm a 6cm, rhaid i fi adio pob rhif (7 + 9 + 6 = 22) cyn rhannu gyda 3 (22 / 3 = 7.33). Dyfnder cyfartalog yr eira felly yw 7.33cm. 

Mae gorsafoedd tywydd fel y Swyddfa Dywydd (MET Office) wedi troi at dechnoleg i ddyfeisio dulliau newydd o fesur dyfnder eira. Edrychwch ar y llun o un o orsafoedd eira’r Swyddfa Dywydd. Mae nhw’n defnyddio synwyryddion laser i fesur dyfnder yr eira ar yr arwyneb gwastad. Gall meteorolegwyr gasglu data o bob cwr o’r wlad wrth wasgu botwm – llawer haws a mwy dibynadwy nag anfon pobl allan i’r oerfel gyda phren eira! Mae pob un o orsafoedd eira’r Swyddfa Dywydd i’w gweld ar y map – oes un yn agos atoch chi? 

Os yw hi wedi bwrw eira, cofiwch fesur y cwymp gyda’r mesurydd glaw neu’r dyfnder gyda phren eira a nodi’r canlyniadau fel ‘Sylwadau’ wrth uwchlwytho eich cofnodion wythnosol. Bydd yn ddiddorol cymharu dyfnder yr eira â chwymp yr eira yn y mesurydd glaw! 

Daliwch ati Gyfeillion y Gwanwyn, 

Athro’r Ardd

 

Eich sylwadau:

Carnbroe Primary School: The weather in Carnbroe changed throughout the week. It started with beautiful crisp sunny days, snow on Wednesday and finally it rained and rained. Our plants were all well watered. Hooray!!

East Fulton Primary School: We had snow during Tues evening which is why rainfall reading is so high on Wed.

Auchenlodment Primary School: On Tuesday night it snowed so the rain gauge was filled with snow on Wednesday. We had to melt the snow so we could get a reading.

St. Charles Primary School: It was very icy this week and the water in the water gauge was frozen.

Ysgol Y Wern: Mae'r tywydd wedi oeri ond mae hi wedi bod yn heulog.

Arkholme CE Primary School: First really cold weather also got a bit of frost and one of the pots fell over. None of the bulbs have started to sprout yet though.

Stanford in the Vale Primary School: Frosty mornings, bright blue skies we have experienced this week.  Heavy rain on Wednesday.

Henllys CIW Primary: We had a lot of rain on Wednesday and it was cold on Monday

Beulah School: very rainy Tuesday night !!!!!!!!!!

Trellech Primary School: It rained on Wednesday but not any other day of the week. It was fun measuring the rainfall.

St. Nicholas Primary School: We had a lot of rain on Tuesday night.

Barmston Village Primary School: The weather has been rainy this week.

Ysgol Glanyfferi: A wet week in Wales! Getting colder. Looking forward to seeing green shoots.

Broad Haven Primary School: It was very windy to start this week but with some sun. We had more rain and it was cold in the mornings.

Ysgol Rhys Prichard: A lot of rain on Wednesday. Really cold on Tuesday.

Darran Park Primary: The rainfall hasn't been very consistent. On the other hand the temperature has been very consistent has only varied by 1 or 2 degrees.

St. Charles Primary School: It was very icy this week and the water in the water gauge was frozen.

Garstang St. Thomas' CE Primary School: We were on half term this week but Mrs Bosson kept a record of the rainfall and temperature for us.

Professor Plant: Thank you Mrs Bosson!

Breckon Hill Primary School: We have measured the temperature and the rainfall in the location of the pots (front of the school) and in the flower beds (at the back of the school). We have noticed that it is slightly warmer at the front of the school as this area gets a little bit more sun.

Archwilio Achau Emlyn Davies y Draper

Mae'r gwaith o ddatblygu sesiwn i blant am Siop Draper Emlyn Davies yn parhau yma yn yr Amgueddfa Wlân.

Roedd modd dechrau creu llun cyffrous o’r siop a’i  pherchennog trwy bori trwy dudalennau bywgraffiad Alan Owen: Emlyn Davies The Life & Times Of A Dowlais Draper in the first Half Of The Twentieth Century.

I ddechrau, roedd gan Richard Davies (sef enw genedigol Emlyn Davies) linach deuluol drawiadol. Roedd yn perthyn i'r Parchedig John Williams, a oedd yn bregethwr, bardd, cyfansoddwr emynau ac ysgrifwr nodedig; a John Havard a fu’n lawfeddyg ym mrwydr Waterloo.

Ar droad y ganrif ddiwethaf mae’n debyg fod y teulu yn gerddorol tu hwnt, ac yn un o’r rhai cyntaf yn yr ardal i fod yn berchen ar ‘phonograph’, sef dyfais fecanyddol i recordio sain. Mae’n debyg y deuai cymdogion a pherthnasau i fewn yn slei i gyntedd ei cartref i wrando arno!

Blynyddoedd o Eithafion

Bu 1912 i 1914 yn flynyddoedd o eithafion i’r siop a’r ardal:

1912:  Bu streic chwerw yn y gweithfeydd rhwng Mawrth 1af a diwedd Ebrill a gafodd effaith ddifrifol ar fusnesau lleol. Yna i’r gwrthwyneb yn llwyr fe siriolwyd Dowlais ddigysur gan faneri ac addurniadau lliwgar ar Fehefin 29fed pan ymwelodd y Brenin a’r Frenhines â’r dre.

Hydref 1913: Bu trychineb gwaethaf y diwydiant glo yn yr ardal sef Tanchwa Senghennydd, lle cafodd 439 o ddynion a bechgyn eu lladd.

Y stori fwya hynod ac annisgwyl efallai oedd cysylltiad y siop a storm ddifrifol a ddigwyddodd bythefnos ar ôl y digwyddiad ofnadwy hwnnw. Bu corwynt enfawr a chwythwyd a chlwyfwyd Doli - un o geffylau cludo parseli y siop, drosodd yn y gwynt!

1914: Ac ar nodyn ddwysach fyth - yr Ergyd Farwol - Y Rhyfel Byd Cyntaf a’i holl erchylltra a gyffyrddodd â phob cymuned.

Rhyfeloedd Byd: Newid Byd yn Nowlais

Bu byd o newid i nifer o bobl wedi‘r rhyfel byd 1af, ac yn enwedig i ferched. Mae Miriam - Minnie fel y gelwid - merch hynaf Emlyn Davies, yn esiampl o’r effaith yma.

Yn ystod y rhyfel er ei bod hi’n astudio mewn ysgol breswyl yn Aberhonddu, fe ddychwelodd i helpu yn y siop oherwydd bod nifer o’r dynion wedi gorfod mynd i ymladd. Yna, yn 1937 wedi marwolaeth ei thad, etifeddodd y siop mewn cyfnod anodd a thywyll arall.

Fe wnaeth y rhan yma o’r stori a’i chymeriad a’i bywyd hi gynnig ei hun fel spardun i greu sesiwn ysgolion yma yn yr Amgueddfa Wlân.

O fantais hefyd oedd bod hwn yn hanes o fewn côf. Cyffrowyd fi wrth feddwl mod i’n mynd i gael cyfle i wrando ar Mr Owen yn darlunio’r siop yn ystod y cyfnod cythryblus yma.

Cwrdd â Theulu Emlyn Davies

Dyna od fel mae rhywun yn dechrau tueddu dychmygu bod cymeriad mewn ffilm, llun neu lyfr yn parhau i fod yr un oed am byth - ac wrth deithio gyda'r curadur Mark Lucas i fwthyn bach ar gyrion Castell Newydd Emlyn i gyfarfod a Alan Owen (wyr Emlyn Davies), bron i mi argyhoeddi fy hun fy mod yn mynd i weld bachgen bach gyda chapan a throwsus byr a la y 30au!

Yr hyn sydd yn arbennig am gael cyfarfod wyneb yn wyneb a phobl sydd ynghlwm â hanes fel hyn yw eich bod yn cael gwell amgyffred o bersonoliaethau. Cofiai Mr Owen ei dadcu fel person hoffus, cariadus, a charedig - ac er ei fod yn amlwg yn ddyn busnes llwyddiannus gyda chyfrifoldebau mawr yn ei waith a’i gymdeithas, roedd hi’n ddifyr i ddarganfod y berthynas a fu rhyngddynt.

Cofiai fel y deuai ei dadcu ag anrhegion yn ôl iddo fe a’i chwaer bob tro y teithiai ar hyd y wlad ar fusnes. Cofiai gael llwnc o gwrw ganddo hefyd a chael ei gwrsio rownd y cownter!

Soniodd llawer am y gymuned fel yr oedd yn blentyn - roedd llawer o Wyddelod yn byw yn yr ardal yr adeg honno ac roedd  atgofion ganddo am orymdeithiau lliwgar ‘Corpus Christi’yn Dowlais.

Bu Mr Owen a’i chwaer ‘fach’ Mrs .Joan Preston (trwy ebost) yn garedig tu hwnt yn rhannu nifer o’u hatgofion o’r siop yn ystod y rhyfel pan fu eu mham Miriam Owen (Minnie) yn rhedeg y siop – ond eto mwy am hyn yn y blog nesaf!

Y gamp nesaf fydd cwtogi yn ofalus hanes hanner cant o flynyddoedd y siop i script 45 munud!

 

 

 

 

 

 

 

Helo Cyfeillion y Gwanwyn,

Diolch am yr holl waith yr ydych wedi gwneud ac am rannu eich lluniau! Roedd o'n hynod o galed i ddewis dim ond pum enillydd. Mae'r lluniau a ddewiswyd yn dod o ysgolion yng Nghymru sef ddim cymryd rhan yn y prosiectau estyniad Edina. Os ydych yn cymryd rhan yn y prosiectau estyniad Edina fydd eich llun hefo cyfle o ennill cystadleuaeth nhw, a bydd yr Edina yn cyhoeddi enillwyr yn fuan.

Dyma'r enillwyr:

 

Severn Primary School

Ysgol Trellech

Ysgol San Sior

Ysgol Abererch

Ysgol Pennant

 

Bydd eich gwobrau yn y post erbyn wythnos nesa Cyfeillion y Gwanwyn.

Rwyf isio ddweud diolch mawr i bob ysgol a rhannodd ei lluniau. Oedd o’n hyfryd gweld y gwaith rydych wedi gwneud, fallu plîs cadwch ymlaen yn rhannu gyda ni!

Cafodd llawer o sylwadau diddorol ei rhannu gyda’r cofnodion tywydd wythnos dwytha. Dyma rhai ohonyn nhw:

 

Eich sylwadau

YGG Tonyrefail: Mae wedi bod yn wythnos sych iawn....a very dry week Professor Plant!

Ysgol Tal y Bont: Mae'n oeri yn araf yn nhal y bont wythnos yma yr athro planhigin

St. Charles Primary School: The weather this week was cold and mostly dry.

The Blake CE Primary School: It has been a bit damp this week especially at the end of the week. It is starting to feel a lot colder as winter is coming.

St Robert's R.C Primary School: It's been getting colder!!

Boston West Academy: We think the weather has been warmer than we would have expected for this time of year and there has been hardly any rain.

Darran Park Primary: We have noticed that the temperature has started to drop over the week. It has been mostly dry, however, there was a shower on Thursday night.

Ysgol Iau Hen Golwyn: It was fun. There wasn't much rain.

Broad Haven Primary School: A dry sunny week cold in the mornings but warm by the afternoon. Rain expected this weekend -but only showers

Stanford in the Vale Primary School: Monday we had no school. Enjoying looking at our planted bulbs! We have had some frosty mornings.

Carnbroe Primary School: We have had a sunny, dry but cold week. We have decided to make predictions about our bulbs and we are all excited to find out what will happen.

Henllys CIW Primary: We have had no rain and we have been allowed out to play!!!

Hudson Road Primary School: It has been really nice Autumn weather. We hope our bulbs are warm in the soil.

Ysgol Rhys Prichard: First frost of the Autumn this Wednesday!

Auchenlodment Primary School: We all enjoyed collecting the data and from next week we will work in pairs to collect the data.

 

Trellech Primary School: Thank you for letting us complete the bulb activity we really enjoyed taking our measurements. Diolch yn fawr.

Professor Plant: Thank you for taking part Bulb Buddies, I’m glad that you are enjoying the project!

 

Breckon Hill Primary School: We have measured the temperature and the rainfall in the location of the pots (front of the school) and in the flower beds (at the back of the school). We have noticed that it is slightly warmer at the front of the school as this area gets a little bit more sun.

Professor Plant: It’s fantastic that you are observing these differences and logging them Bulb Buddies! Which bulbs do you think will flower first?

 

Our Lady of Peace Primary School: This was our first week. Mr Kelly showed us what to do.

 

Barmston Village Primary School: We are noticing some liquid in the rain gauge when it has not rained. We think it is like the dew that has been on the grass as there is only a little bit of it.

Professor Plant: Hi Bulb Buddies, well done for noticing the liquid and questioning how it will have come to be in the rain gauge! I suspect that you are right and that the water is the result of dew forming inside the gauge. Air contains water vapour, and the higher the temperature the more water vapour it contains. When the temperature drops (as it often does overnight) the air cools and releases the water vapour it has been carrying. When surfaces or objects cool to the point that the air around them can no longer contain its level of water vapour, the air will condense and form droplets on the surface of the object. Fantastic Work Bulb Buddies!

 

Law Primary School: All pupils in Primary 5 have really enjoyed planting the daffodils and crocus. They are working in pairs to record rainfall and temperature each day.

On a bright and breezy Saturday morning in September an enthusiastic group of children and adults gathered at the Mumbles in wellies and hi-vis jackets ready for a Big Beachcomb.

The Beachcomb was the first activity of Swansea Museum’s Lost Treasures of Swansea Bay project, which is being funded by the Saving Treasures; Telling Stories project based at Amgueddfa Cymru.

Led by Paul Huckfield of the Glamorgan Gwent Archaeological Trust and Mark Lodwick of the Portable Antiquities Scheme Cymru we set out with the retreating tide to see what treasures of Swansea’s past we could find.

Searching

The vast expanse of mud, sand, rocks and shallow pools did not look promising at first. But almost as soon as we had set off Paul was showing us the blackened and glistening remains of a prehistoric forest. Within another hour he had pointed out the sites of seven shipwrecks, old mooring points and other remains of Swansea’s maritime past.

On the surface of the shore we found hundreds of pieces of old pottery, metalwork, animal bones, glassware and pieces of clay pipe. A particularly evocative find was the base of a wine bottle, dating back to the 1600s.

The glass was thick, and so dark that you could only see its muddy green colour by holding it up to the sun. This was a high-status object - once, it would have held a decent vintage rather than plonk.

Collecting

When enough pieces had been collected in carefully labelled bags we laid them out on the slipway and sorted them into categories with the help of Paul and Mark – ceramics, glass and metalware, organic material.

Imagining

We speculated about who the objects had belonged to, when they were made, and how they ended up in Swansea Bay. Some, such as the bottle and some of the pots, were imported items – could they have been among the cargoes of one of the wrecked ships? Had the pipes been smoked by sailors and fishermen with wheezy chests? Were the bones the remains of their dinner?

Our treasures have now been taken back to Swansea Museum where they will be studied by the Young Archaeologists Club and used as inspiration for the Dylan Thomas Centre’s Young Writers Squad.

Look out for the next chapter in their history in a future blog.

This week we managed to combine cleaning floors with a fitness routine and aroma therapy.  Who said housework can't be Fun!


Hannah Glasse, writing in her 18th century books ‘Servant’s Directory ‘ and ‘Housekeeper’s Companion’, advised using green herbs to clean wooden floors.
We couldn't resist having a go and it just happened that the floorboards in our 18th century Kennixton farmhouse required a bit of attention.

Like us today in the conservation team, wetting floors to clean them was considered to be a bad idea in the 18th century. It would introduce damp into the house and excess water could damage furniture and precious soft furnishings and carpets. 
Hannah recommended taking green leaves of Tansy, Lemon balm, Mint and Fennel, all of which we have growing in abundance in the cottage gardens. The herbs are then strewn across the floor and rubbed in with a broom.  The oils are released and nourish the wood, while the moisture activates the dirt, which is then taken up by the leaves.


We left the floor to dry overnight before sweeping up the debris the next day. Hannah then recommends polishing the floor with a dry rubbing brush, which should bring the wood up to a fine brown colour, just like mahogany. 


The herbs would also impart a sweet smell creating a natural air freshener. An added bonus for us is that the herbs Hannah recommended are also natural pest repellents that we normally dry and use throughout the cottages to protect our woollen textiles from moth or carpet beetle attack, so hopefully the lingering aroma will also deter pests from making a home.


It worked! All that Hannah promised came true. Our wooden floors appeared darker and shinier and the smell was amazing, we’ll definitely be doing this again.