Xyoo 1826, John Walker, kws tshuaj hauv Stockton on Tees, nrhiav pom los ntawm kev muaj hmoo uas ib tus pas coated nrog cov tshuaj tawg mus rau hauv nplaim taws thaum khawb thoob nws lub siab hauv tsev. Nws tau mus tsim thawj qhov kev sib txhuam sib tw.
Leej twg tsim thawj qhov sib tw?
Ib tus kws muag tshuaj Askiv hu ua John Walker tau tsim qhov kev sib tw los ntawm kev sib tsoo hnub no hauv xyoo 1826, raws li Hnub no hauv Keeb Kwm Kev Tshawb Fawb. Nws tab tom ua haujlwm rau qhov kev sim tshuaj uas yuav siv tau rau hauv phom.
10 qhov kev tsim ua yuam kev yog dab tsi?
Ntawm no yog 10 ntxiv
- Cornflakes, 1894. Will thiab John Kellogg, Xya-hnub Adventists, sim ua cov zaub mov tsis noj nqaij hauv 1894. …
- Cellophane, 1900. …
- Penicillin, 1928. …
- Antabuse, lossis disulfiram, 1937. …
- Teflon, 1938. …
- Slinky, 1943. …
- Microwave cub, 1945. …
- WD-40, 1953.
Leej twg invented Machis?
Qhov kev sib tw niaj hnub no tau yug los hauv nruab nrab-19th caug xyoo los ntawm Swedish chemist Gustaf Erik Pasch. Nws "kev ruaj ntseg match" tsim tau txav cov phosphorus tawm ntawm qhov kev sib tw nws tus kheej thiab mus rau qhov chaw muaj kev nyab xeeb, ua kom muaj kev nyab xeeb dua, siv tau yooj yim dua, thiab cov khoom pheej yig dua.
Yuav ua li cas yog qee qhov kev tsim ua yuam kev?
30 Lub Neej-Hloov Kev Tsim Kho Uas Muaj Kev Ua Phem Tag Nrho
- Lub qhov cub microwave.
- Post-It Note.
- ThawjArtificial Sweetener.
- Penicillin.
- Chocolate Chip Cookies.
- X-ray tshuab.
- Super kua nplaum.
- Tus Txhaj Tshuaj Pacemaker.
