2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Silly Putty tau tshawb pom hauv xyoo 1943 los ntawm James Wright uas sib xyaw boric acid thiab silicone roj ua ke. Nws tau qhia rau pej xeem hauv 1950 los ntawm Peter Hodgson.
Dab tsi yog thawj siv rau Silly Putty?
Silly Putty yog ib qho ntawm cov khoom coj mus rau lub hnub qub hauv xyoo 1968 thaum lub hom phiaj Apollo 8. Lawv feem ntau siv nws los tuav cov cuab yeej hauv qhov chaw kom lawv tsis txhob ntab mus. Keeb kwm koj tuaj yeem siv Silly Putty luam tawm cov ntawv los ntawm comics thiab ntawv xov xwm thiab cov zoo li.
Tus Silly Putty nqi pes tsawg xyoo 1950?
Silly Putty tau muag thawj zaug xyoo 1950 rau $1.
Vim li cas Silly Putty tsim?
Thaum Nyij Pooj Teb Chaws Asmeskas cuam tshuam Asmeskas cov khoom siv roj hmab thaum Ntiaj Teb Tsov Rog II, cov kws tshuaj ntawm General Electric pib nrhiav cov khoom siv hluavtaws. James Wright dawm raws li qhov khib nyiab: ib qho cov khoom siv zoguas tiv thaiv kev lwj thiab thaws 25 feem pua siab dua roj hmab.
Dab tsi yog thawj xim ntawm Silly Putty?
Tus thawj coral-xim Silly Putty yog tsim los ntawm 65% dimethylsiloxane (hydroxy-terminated polymers nrog boric acid), 17% silica (crystalline quartz), 9% Thixatrol ST (castor roj derivative), 4% polydimethylsiloxane, 1% decamethyl cyclopentasiloxane, 1% glycerine, thiab 1% titanium dioxide.
Pom zoo:
Thaum twg siv kev tawm dag zog?
1: kev ua ntawm kev siv Lawv yeej los ntawm kev siv zog ntau. 2: siv lub zog lossis muaj peev xwm Qhov kev ua si yuav tsum muaj kev tawm dag zog lub cev. Koj siv zog li cas? Exertion kab lus piv txwv Nws lub ntsej muag ci liab los ntawm kev tawm dag zog, nws ob lub qhov muag ci ntsa iab.
Leej twg raug rau txim ntau tshaj plaws ntawm cov neeg tso dag tso dag?
Nws yog Ja Crispy leej twg raug rau txim ntau dua li lwm tus hauv kev ua yeeb yam, tag nrho 52 zaug! Tsis deb tom qab yog txhua leej txhua tus nyiam tib neeg ferret, Murr, uas - txawm tias nws cov phiaj xwm "foolproof" - tau raug rau txim 48 zaug.
Thaum twg siv i.e. thiab thaum twg siv xws li?
I.e. yog ib qho luv luv rau kab lus id est, uas txhais tau tias "uas yog." I.e. yog siv los rov hais dua ib yam dab tsi uas tau hais yav dhau los txhawm rau kom meej nws lub ntsiab lus. E.g. luv luv rau exempli gratia, uas txhais tau tias "
Thaum twg siv polyacrylamide thiab thaum twg agarose?
Agarose gels siv nrog DNA, vim qhov loj ntawm biomolecules (DNA feem ntau yog ntau txhiab kDa). Rau cov protein gels, polyacrylamide muab daws teeb meem zoo, raws li qhov me me me (50 kDa yog qhov raug) zoo dua rau qhov sib txawv ntawm cov gel.
Leej twg qhov twg thaum twg yog vim li cas nug cov lus?
Ib nqe lus nug lossis lo lus nug yog lo lus siv los nug cov lus nug xws li dab tsi, qhov twg, thaum twg, qhov twg, leej twg, leej twg, leej twg, vim li cas, seb thiab ua li cas. Lawv qee zaum hu ua wh-lo lus, vim lus Askiv feem ntau pib nrog wh- (piv Tsib Ws).
