Cov txheej txheem:
- Puas tau ua polonium?
- Kuv tuaj yeem tau polonium nyob qhov twg?
- Puas siv polonium los ua riam phom?
- Tus nqi yuav polonium ntau npaum li cas?
Video: Puas tau polonium raug mined?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Polonium yog ib yam khoom ntuj tsim tsis tshua muaj. Nws yog pom nyob rau hauv uranium orestab sis nws tsis muaj txiaj ntsig los rho tawm nws. Nws yog tau los ntawm kev sib tsoo bismuth-209 nrog neutrons muab bismuth-210, uas tom qab ntawd decays los ua polonium. Tag nrho cov khoom lag luam tsim polonium hauv ntiaj teb yog tsim nyob rau hauv Russia.
Puas tau ua polonium?
Polonium tam sim no tuaj yeem ua rau hauv milligram tus nqi hauv cov txheej txheem no uas siv cov neutron fluxes siab pom hauv cov reactors nuclear. Tsuas yog li ntawm 100 grams yog tsim txhua xyoo, xyaum tag nrho nws nyob rau hauv Russia, ua polonium tsawg heev.
Kuv tuaj yeem tau polonium nyob qhov twg?
Yog, Polonium-210, "uas cov kws tshaj lij hais tias ntau zaus tuag ntau dua li cyanide," zaj dab neeg sau tseg, "tuaj yeem yog yuav raug cai los ntawm United Nuclear Scientific Supplies, a mail-order tuam txhab uas muag hauv Web.
Puas siv polonium los ua riam phom?
Oleg Gordievsky, yav dhau los tub ceev xwm nrog Russia KGB uas yog ob tus neeg sawv cev rau Tebchaws Askiv thaum Tsov Rog Txias, hais tias polonium yog ib qho zoo tshaj plaws kev tua phom vim tias nws yog tus neeg tuag kiag li: " Polonium yog ib qho tshuaj lom zoo tshaj plaws, nws tua tau kiag li, tsis muaj kev cuam tshuam, thiab yog tias koj siv nws, koj siv nws nrog 100 feem pua qhov tseeb. "
Tus nqi yuav polonium ntau npaum li cas?
Polonium-209 yog muaj los ntawm Oak Ridge National Laboratory ntawm tus nqi kwv $3200 ib microcurie.
Pom zoo:
Puas tau mardi gras puas tau raug tshem tawm?
Txij thaum nws pib xyoo 1857, New Orleans Mardi Gras tau raug tshem tawmlossis loj heev rov qab 13 lwm zaus. Tau muaj cov kab mob thiab kev tsis sib haum xeeb hauv zos tau tso tseg rau kev ua yeeb yam, tab sis feem ntau ntawm kev tshem tawm tau tshwm sim los ntawm kev ua tsov ua rog, thawj qhov piv txwv yog Tsov Rog Tsov Rog .
Cov neeg raug txim raug tshem tawm tau ntau npaum li cas?
Peb caug-rau lub xeev thiab Washington, DC, muaj kev cai lij choj ntawm cov phau ntawv uas them nyiaj rau cov neeg raug tshem tawm, raws li Txoj Haujlwm Innocence. Tsoom Fwv Teb Chaws tus txheej txheem los them cov neeg raug txim txhaum cai txhaum cai Yog hais tias qhov kev txiav txim hloov mus ua ib qho kev ncaj ncees, ces ib los yog ob qho tib si ntawm cov nqe lus no yog thaum kawg suav hais tias yog cuav Nyob rau hauv rooj plaub uas ib tug loj-scale cov neeg tuaj saib yog u
Cov kab lus twg yog tus lej raug raug kuv tau yuav khoom?
Cov lus teb raug yog " Kuv tau yuav khaub ncaws los ntawm Qub Navy ntawm lub khw lub vev xaib." Yuav ua li cas ntawm kab lus twg yog qhov raug? Cov kab lus uas sau tau raug yog " Kuv cov chav kawm yooj yim tshaj plaws yog Chemistry thiab Spanish"
Qhov twg hlau mined nyob rau sab qab teb Africa?
Sishen thiab Kolomela mines nyob rau sab qaum teb Cape thiab Thabazimbi mine hauv Limpopo xeev. Peb muaj cov khoom loj, zoo hlau ore hauv South Africa thiab Brazil . cov hlau hlau nyob qhov twg hauv SA? Tseeb tiag cheeb tsam Eyre Peninsula tau lees paub tias yog lub xeev loj hlau hlau hauv South Australia .
Yuav ua li cas thiaj nrhiav tau kev sib raug zoo ntawm kev sib raug zoo?
Hauv txoj hauv kev, kev sib raug zoo R yog qhov sib txawv, tshwj xeeb yog rau txhua tus a thiab b hauv A, yog R (x, y) nrog x ≠ y, ces R (y, x) yuav tsum tsis tuav, lossis, sib npaug, yog R(x, y) thiab R(y, x), ces x=y . Dab tsi yog qhov kev sib raug zoo ntawm kev sib raug zoo hauv lej?
