Dear friends,
my daughter who is now in form four asked me a question that I was not able to give her a direct answer.She says that in her form four physics mock examination she got this question that she was unable to answer technically.
The question is:- WHY ARE REFRIGIRATORS PAINTED WHITE?For her benefit and those who do not know, we would appreciate resonable/technical explanations concerning this question PLEASE.
Kabla sijajibu swali ngoja niwe mbongo halisi nikuulize swali lingine~~Mbona kuna refrigerators za kila rangi na sio white peke yake?
ReplyDeleteFirst reason is that White is a neutral color that matches to any kitchen/furniture, however there are other colors painted fridges as well like most commonly available silver colored/painted fridges. Another reason could be that the white color reflects light/heat (rays) away from the fridge so this keep its cooling effect in place. However the later is not a good reason because the fridge itself is efficiently insulated for that purpose.
ReplyDeleteI think he is refering to the fact that they are white inside. It's true even if they are black, silver, green, etc., they are colored white inside. It will be interesting to know why....
ReplyDeleteNi kweli kuna refrigerators za kila rangi siluhizi, kwa kujibu swali lako, most refrigerators are white to minimise absorption of heat from the surroundings. White was/is also still used for aesthetic reasons i.e it looks good.
ReplyDeleteAdd some words to make it clear "..... painted white inside"
ReplyDeleteaccording to my opinion refrigerators are coloured white as white colour doesn't absorb heat quickly.Black colour absorb heat very fast compared to any other colours.A good example is on summer season people are adviced to wear bright colours like white,a person who wears black will extremely feel hot.Apart from that these days we have refrigerators with many colours as there is an advanced technology that would control the amount of heat absorbed.hope this one will work.
ReplyDeleteMimi nadhani rangi nyeupe sio tatizo na inaaminika kuwa inaendana na kila rangi ya nyumba na zipo refrigrator za rangi mabalimbali hata hiyo nyeupe yaweza badilishwa ninachofahamu rangi nyeusi nyuma ya refrigrator ni muhimu kwa coil kufanya kazi vizuri maana rangi nyingi zinaweza kusaidia coils kugenerate heat
ReplyDeleteNot all refrigerators are painted white. However,the answer could be coz White color doesn't absorb heat and resistant to kutu somehow.
ReplyDeleteMi nadhani weupe ni hali ya usafi na fridge inaweka vyakula so likiwa jeusi sijui kama litaleta mvuto, sijui lakini huo ndio mtazamo wangu
ReplyDeleteme too have seen green etc refrigerators. it is true that most are white, but there are other colours too
ReplyDeletehata mimi sijui.
ReplyDeleteAsk her which ones? Because there are black, metallic, white and all sorts of efrigerator paintings.
ReplyDeleteswali halieleweki ni nje au ndani muulize vizuri
ReplyDeleteNot all refregerators, some of them are Grey in colour.
ReplyDeleteMwanao ni nanga, maana amefundishwa lazima sababu rangi nyeupe inakusudiwa ku-reflect heat kutoka soroundings.
ReplyDeleteMy frigerator is stain steel and not white so mwalimu ameloba step this time
ReplyDeleteI think the reason was to reduce electrical shock, but nowadays with higher technology we have refrigerators with a steel finish. Just trying to remember my youth, if I am wrong please forgive me
ReplyDeleteUkweli ni kwamba kuna refrigerator za rangi zingine kama black and brown. Lakini nafikiri nyingi ni za rangi nyeupe kwa sababu ya kutoka ku-match the color of House Interior especially the kitchen. Hiyo ndo design ya nyumba nyingi za western countries pengine tofauti na nyumbani lakini kwa vile wanazitengeneza wao then wana-target matakwa ya soko lao.
ReplyDeleteI think for no apparent reason at all, except maybe it may be cheaper. I have seen refrigerators of all kind of colours!
ReplyDeleteIf u mean why they r painted white outside its to avoid rusting. Aluminium n other kind of metals rusts easily.
ReplyDeleteRust happens when alumnium(vyuma)comes to contact wit water and oxygen. To avoid tht most of the metals r painted.
And i dont believe they r painted inside coz mostly they r plastics inside.Besides from the freezer ofcoz which has steel so as to freeze.
I will try and answer your question.
ReplyDeleteRefrigerators used to be painted white and their coils black because being a cooling appliance it was painted white as white does not absorb heat easily!
Where as the coils were painted black to easily disperse heat generate by the cooling gas circulating though the coil pipes.
Now to answer the anonymous - June 12, 2008 4:34pm, refrigerators are now painted in various colours and not just white because of improved technology for example modern refrigerators no longer use the enviromentally harmful CFC gas instead they use HFC gas which is less harmfully and more efficient.
Hope that answers your question.
Mdau Machu
mdau WIM wa 523 umesema because of cheap...swali kwako tena,jee mbona IPOD nyeupe ni more expensive kuliko nyeupe hata kama kila kitu kiko sawa?
ReplyDeleteThis is because of the metallic luster as well as the sense of cleanliness and reliability unique to stainless steel found ready acceptance for kitchen use
ReplyDeleteNashangazwa na mada hii! Muulizaji na wanaomjibu wote wamekosa kazi, sasa hilo ni swali la kuuliza mwanafunzi anayemaliza kidato cha 4? Suala hilo alitakiwa ajifunze pale alipoanza kujifunza suala zima la nishati na sifa zake darasa la nne. Watu wengine bwana, eti na mzazi wake analeta suala hili kama issue na kuwashughulisha wadau baada ya kazi nzito ya kubeba box. Si angetumia common sense tu kumjibu mwanae, au ndo like father like daughter.:P jamani kuna masuala muhimu ya kujadilia hapa, bajeti ndo hiyo, hakuna hata mtu mmoja anyetoa maoni au kuligusia. Jamani ni vipi Wabongo, fursa kama hizi tuzitumie kujadili mambo ya mana yanayohusu taifa letu. Nilifikiri ni watoto wa shule za serikali tu wanapwea kielimu kumbe hata wa medium school..haya! Pengine ndo hata baraza la mitihani likauliza suala hilo (kama ni mock ya baraza), kwani uwezo wa kielimu wa watoto wetu unatia shaka, kama kweli hawajui athari za rangi katika mazingira yetu.
ReplyDeleteJirani Mdaku
sio majokofu yote ni meupe, sijui huko kwenu lakini niliko mimi huku kuna ya kila rangi, mwambieni huyo mwalimu atembee akipata kijilikizo
ReplyDeletembega hapa
Du, majibu kibao na mchele mmoja.
ReplyDeleteNaungana na waliosema kuwa Rangi nyeupe haipokei joto kama nyeusi. Kwa waliosema KUTU hili si kweli. Paint ni paint tu na wala si kweli kwamba rangi nyeupe inazuia kutu. Nafikiri sababu nyingine itakuwa sawa na kwa nini hospital kuna rangi nyeupe. Hii Rangi inaonyesha HARAKA SANA UCHAFU. Hivyo kwa wale wavivu inakuwa haraka sana kujua kuwa KABATI LA MBEHO (Wachaga) limechafuka na inabidi LIOSHWE. Siku hizi achia yale yenye rangi kibao, kuna yale makubwa sana ya kujengewa ukutani. Haya huwa yanamaliziwa na mbao na hivyo kuwa sawa kabisa na makabati ya jikoni. Huwezi kujua Kabati liko wapi na Frigi liko wapi... Mdau Sikonge.
Kuna mamabo mawili: rangi ya nje na ndani. Hiyo ya nje haina maana kwa sababau siku hizi majokofu yana rangi mbalimbali, sawa na makomputa yalipoanza yalikuwa na rangi moja lakini siku hizi yana rangi lukuki.
ReplyDeleteRangi ya ndani ina maana kubwa:
Moja ni sababu ya usafi, kama wengine walivyosema.
Mbili, ni kuzuia mionzi (radiation) isitoke nje. Ndio maana microwave ndani zina rangi nyeupe, na hata wafanyakazi katika mazingira ya mionzi huwa wanavaa magwanda meupe.
THEY ARE PAINTED WHITE SIMPLY BECAUSE " THEY ARE MADE BY THE WHITE PEOPLE".ALL THE RED OR GREY REFRIGERATORS ARE MADE BY CHINESE AND THEY ARE OF LOW QUALITY!!
ReplyDeletePeople who prepare these exams mainly want to test whether students can explain a particular phenomenon taught in class regardless of the validity of the example. A fridge's color has nothing to do with its efficiency. However, a student is tested to see whether she can relate the color white to its absorption qualities.
ReplyDeleteA fridge can only be sprayed colour but not paint....You paint a wall or other stuff but not a fridge or car....Sasa mnaweza kunielewesha hapa hizi Painted fridge ni za aina gani?
ReplyDeleteHUYUKI WA NGEKEWA
Heat has nothing to do with colour - light has (Attn. Anonymous 4:46)...
ReplyDeleteSamahani Born Again Pagan, Mbona microwave yangu ni ya silver nje na ndani? hebu nisaidi kitaalam. Kuna madhara yoyote?
ReplyDeleteAfadhali siku hizi walimu wanauliza maswali ya kifizikia yanayofikirisha na yasiyo ya kinadharia tu.
ReplyDeleteRangi nyeupe haipotezi jotoridi kirahisi, ndio maana hata dubu wanaokaa kwenye nchi za baridi ni weupe pe kama theluji.
Big up Michuzi angalau umetoa assignment watu wametutumsha tufizikia twao kidogo(joke)!Ila inafurahisha sana kuona watu wakijifua kunyambulisha uhalali wa majokofu kuwa na rangi nyeupe kwa nje,Big up sana wote mlioshiriki kuchangia kwani kwenye vitabu vingi mlivyosoma havikuzungumia suala la ni rangi ipi inaafaa kupaka nje ya jokofu na kwa nini?
ReplyDeleteJibu ni rahisi, Refridgerator was invented by WHITE PEOPLE, I guess thats why.
ReplyDeleteDallasfinesty.
THEY ARE PAINTED WHITE SIMPLY BECAUSE " THEY ARE MADE BY THE WHITE PEOPLE".ALL THE RED OR GREY REFRIGERATORS ARE MADE BY CHINESE AND THEY ARE OF LOW QUALITY!!
ReplyDeleteHuyo Binti alikuwa anafikisha matokeo anayoyatarajia kwa Dad wake..Kama hajui kwa nini Basi hata hiyo form four kasha feli.
ReplyDeleteAsubirie F zake zakutosha.
Wachache sana wameweza kuwa na akili ya kujua kwamba hili swali lina lenga ndani ya friji.mafriji kwa nje yako rangi kibao siku hizi nyekundu ,silver, nyano kwani watu wengi siku wanapenda kuweka vitu vinayoendana na rangi ya jikoni kwao .hio rangi inamaanisha ndani ya friji sasa mnaweza kurudia kujibu
ReplyDeleteKwa nini rabgi nyeupe ilitumiwa kwa majokofu ni kutokana na ukweli kuwa rangi hiyo ina uwezo mkubwa wa kureflect joto kuliko nyingine. Nyingine ni swala la usafi na aesthetics ndio maana vifaa vingi vya jikoni maana hupakwa rangi nyeupe na huitwa white products.Lakini kutokana na maendeleo ya teknolojia sasa si lazima. Vizuri mwanao asome black body theory ili aone pia sababu ya kupakwa rangi nyeusi bomba za kupooza gesi nyuma ya friji.
ReplyDeleteSylabus iko nyuma na ukweli wa sasa lakini ni msingi wa kujenga upeo wa kufikiria. kujua ya zamani kunasaidia kuboresha yajayo
tehetehe,
ReplyDeleteRangi ya nje ya friji haina sababu za kitaalamu zaidi ya urembo, unadhifu na hali ya usafi. Kutu inaweza kuzuiwa kwa njia nyingi sana, sio rangi pekee.
Rangi ya ndani ya friji au hata friza ina sababu za kitaalam zaidi ya unadhifu na usafi. friji na friza zinakuwa na ubaridi zaidi ya mazingira ya nje. Apart from insulation, rangi nyeupe inazuia ubaridi wa friji/friza kukutana na insulation na hivyo kupunguza upotevu wa ubaridi. Angalia Thermos, kuta zake za ndani zinang'ara ili kupunguza ukutanaji wa joto na utupu (vacuum) wa thermos.
Nawakilisha
the white spray painting inside the fridges is nothing but for the
ReplyDeletealert due cleaness.We all know,fridge is for food storage,so manufactures follow the the international agreement to enhance hygenity on food and thus prevent the contingencies of disease outbraek.I think this point take part on the reasons.
The question really met response..but lets find the very current issues to solve problems and open our mind.
Al-jaber Mutawalli
Why are you people beating around the bushes as you could get an answer by searching it from http://www.google.com everything you wanna know is in there, siku hizi ni siku za utandawazi na sijuwi kwa nini watoto wanafeli wakati kila somo hapa duniani katika level zote unapata kwenye internet, internet si ya emails tu ni pamoja na mambo kama hayo.
ReplyDelete