Akaunti ya Asilimia 50 ya Uhai
Kuoza kwa mnururisho: tafuta kiasi kinachobakia, muda ulipita au nusu ya maisha, kukiwa na mpindo wa kuoza.
Matokeo yanakuwa bora zaidi unapochapa.
Kuhusu kifaa hiki cha kupigia hesabu
The half-life is the time it takes for half of a radioactive sample to decay, and it sets the pace of the whole process through N = N₀ × (½)^(t / t½), where N₀ is the starting amount, t is the elapsed time and t½ is the half-life. After one half-life half the material remains, after two a quarter, after three an eighth, and so on — the amount never quite reaches zero but halves with every t½ that passes. Choose what to solve for: the amount left after a given time, the time needed to fall to a given amount, or the half-life itself inferred from a measured decay.
As a worked example, carbon-14 has a half-life of 5,730 years, so a sample that starts with 100 units of C-14 falls to 100 × (½)^(2000 / 5730) ≈ 78.5 units after 2,000 years. The calculator also reports the decay constant λ = ln2 / t½ ≈ 0.693 / t½ (the probability a given atom decays per unit time) and the mean lifetime τ = 1 / λ = t½ / ln2, which is about 1.44 half-lives — the average time an individual atom survives — and plots the decay curve.
Because the maths is scale-free, the time and the half-life only need to share the same unit — years, days, seconds or hours — and the initial and remaining amounts can be in grams, atom counts, becquerels or any consistent measure. This makes the tool equally at home with radiocarbon and radiometric dating, medical isotope dosing, nuclear-waste decay planning and any first-order exponential decay, including some drug-elimination and discharge problems that follow the same half-life mathematics.
Maswali yaliyoulizwa mara nyingi
Ni nini fomyula ya nusu - maisha inayosababisha kuoza?
Kiasi kinachobaki baada ya muda ni N = N0 ▵ (1p2) faida ya nusu ya maisha baada ya nusu ya watu kubaki, baada ya robo moja, baada ya watatu kwa nane, na kadhalika.
Je, huo kuoza ni jambo gani linalodumu na lamaanisha maisha?
The decay constant is λ = ln2 / t½ ≈ 0.693 / t½, the probability of decay per unit time. The mean lifetime τ = 1 / λ = t½ / ln2 is the average time an atom survives — about 1.44 half-lives.
Je, ninaweza kupata nusu ya maisha kwa vipimo viwili?
Naam. Orodhesha "kuunganisha" maisha ya nusu-nchi na kuingia katika kiasi cha kwanza na kinachobaki pamoja na wakati uliopita; kifaa hicho kinatatua t1L2 = t IN ln2 / ln BradENN0/N).
Tarehe ya kaboni-14 inahusianaje na nusu ya maisha?
Kaboni-14 huoza kwa nusu miaka 5,730, kwa hiyo ikipima kiasi cha C-14 kinabaki katika sampuli moja ya tende iliyo hai wakati mmoja. Kutoka kwa visehemu 100, karibu 78.5 hubaki baada ya miaka 2,000, na karibu nusu baada ya 5,730 BAD (K) msingi wa kuweka tarehe ya redio.
Ni visehemu gani vinavyotumiwa wakati na nusu ya uhai?
Any unit, as long as the elapsed time and the half-life share it. Enter both in years, or both in seconds; the ratio t / t½ is all that matters, and the results come back in that same unit.
Ni kiasi gani kinachobaki baada ya nusu ya muda wa maisha?
Multiply by one-half for each half-life: 50% after one, 25% after two, 12.5% after three, 6.25% after four. After ten half-lives under 0.1% remains, which is why "about ten half-lives" is a common rule for effectively gone.
Je, nusu ya maisha hutegemea kiasi cha habari ninayoanza nazo?
La. Ni sehemu ya msingi ya kisiwa hicho, bila kutegemea ukubwa wa sampuli, halijoto au hali ya kikemikali.
API bustanini hutumia kifaa hiki cha hesabu kutoka kwenye mfumo wa sheria
Ipigie simu kifaa hiki cha kupigia hesabu kama Junse É not doot toder. Chochote unachoacha kinatumia kiwango kilekile cha mwisho ambacho ukurasa huu haujakamilika; parameta isiyojulikana ni 400, si sufuri kimya kamwe. Soma habari kamili za API docs →
keyboard label
GET https://calculator.free/api/v1/half-life/curl
curl "https://calculator.free/api/v1/half-life/?solve=remaining&initial=100&half_life=5730&time=2000"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/half-life/?" + new URLSearchParams({
"solve": "remaining",
"initial": "100",
"half_life": "5730",
"time": "2000"
}));
const data = await r.json();
console.log(data.results);Matokeo ni makadirio ya mwongozo wa ujumla, si wa kifedha, wa kitiba au wa kodi tu.