Laboratori bilong Rulet · Laboratori · Fisiks · 8 min

Spid i Go Daun

Dispela em i wanpela hap tasol bilong tanim we yu inap save tru long bihain.

Sotpela bekim

Long rot, bal i go isi long wanpela lain i no gat kranki, we fraksen na win i makim. Long taim bilong sampela ful raun, yu inap tingim taim em bai i pundaun, klostu tru long hap sekon. Tasol taim bal i go nabaut bihain, planti bilong dispela save i lus.

model
v′ = −(a + b·v)
save long bihain long rot
antap
save long bihain bihain long pundaun
daunbilo
rong long taim bilong pundaun
0.1–0.3 s yu ken kisim

Model

Ting olsem baltulBalLiklik bal dila i sutim long rot i go long narapela sait long rota. Ol nupela bal i ivorine o Teflon, 18–21 mm.Ritim olgeta → i go isi long tupela samting: hap a i no save senis (fraksen taim bal i ran), na hap b·v i bihainim spit (win na ol narapela lus i bihainim spit): dv/dt = −(a + bv). Ansa i soim olsem spit i go daun isi isi i go klostu long spit bilong pundaun. Olsem na taim bilong raun T = 2πr/v i go longpela moa long olgeta raun, na em i go longpela moa na moa. Painim a na b long ol namba wan sampela raun, na yu save long ol raun i stap yet na taim bal bai i pundaun. I no gat narakain samting hia; em i save bilong fisiks bilong namba wan yia long yunivesiti, long bal i ran long rot.

ol i metaimstretim modelol raun i stap yet, ol i tingimtaim bilong pundaun, ol i tingimtru
raun 1–3: 0.63, 0.67, 0.72 sa, b i stret912.6 s12.4 s
raun 1–4stretim gen812.5 s12.4 s
raun 1–6stretim gen612.4 s12.4 s
Piksa tasol. Olgeta raun i kam moa i mekim tingting i stret moa. Long wok tru, rong bilong 0.1–0.3 s long pundaun yu ken kisim, sapos rot i klin na han i no guria.

Dispela save i givim wanem

Sapos yu save long taim bilong pundaun inap 0.2 sekon, na rotatulRotaHap bilong wil i save tanim na i karim ol hul.Ritim olgeta → i tanim long 15 hultulHulWanpela long ol 37 hul i gat namba long rota. Narapela nem: slot, cup.Ritim olgeta → long wanpela sekon, yu inap painim hul i stap aninit long ples bal i pundaun inap klostu tripela hul. Em gutpela nius long man i laik save long bihain. Nogut nius em olsem: bihain bal i ran long hap i sliptulHap i slipHap i slip i stap namel long rot bilong bal na ol hul, we ol ston bilong sutim bal i stap.Ritim olgeta →, i paitim ston bilong sutim baltulSton bilong sutim balWanpela long ol ain i stap long hap i slip na i mekim bal i pundaun i kalap nabaut. Narapela nem: canoe, diamond, pin.Ritim olgeta → na i kalap long ol liklik banistulLiklik banisAin i banisim tupela hul long wil.Ritim olgeta →. Hul bal i sindaun long en inap stap long wanpela hap i brait 20 i go 30 hul. Bal i go nabaut long hap bilong pundaun, na dispela i kaikai planti bilong save yu kisim long hap bilong rot.

Fisiks bilong Bal bilong RuletSpid bilong Rota bilong Rulet

Wanem samting i stap yet

Sapos bal i save pundaun klostu long hul bilong pundaun planti moa long rendom, orait putim bet long seksenwilSeksenWanpela hap bilong wil we ol hul i stap wan bihain long narapela, i narakain long wanpela grup long laiaut.Ritim olgeta → raun long hul ol i tingim i givim liklik edj. Small na Tse (2012) i metaim dispela long laboratori wantaim kamera. Ol i painim olsem bal i pundaun long seksen ol i tingim planti taim inap long tanim edj bilong kasinomatematikEdj bilong kasinoHap bilong olgeta mani bilong bet kasino i holim long avarej: 2.70% long rulet bilong Yurop.Ritim olgeta → i kamap edj bilong pleia bilong sampela pesen. Long laboratori bilong ol, ol i lukim olgeta wil long antap, ol i save long wil, na ol i putim bet bihain long dila i sutim bal. Ol dispela samting i no stap long laiv tebol.

Save i lus we (piksa tasol)hul yu no save tru long en
taim bilong pundaun ±0.2 s × 15 hul/s
± 3
metaim hap bilong rota
± 1
bal i paitim ston bilong sutim bal
± 10
bal i kalap long liklik banis
± 6
hul yu no save tru long en
05± 10
Namba wan tupela, yu inap mekim i liklik moa long praktis na masin. Las tupela em pasin ol i wokim wil long en.

Wanem samting i senis long wan wan aua

Tupela namba a na b i no stap wankain oltaim long wanpela wil. Ol Eudaemon i bin taimim wanpela wil bilong kasino inap planti yia long ol yia 1970. Ol i painim olsem win i mekim bal i go isi moa long rot, na bal tu i bikpela samting: bal Teflon i lusim spit tupela taim hariap moa long bal ol i wokim olsem bal bilong biliat. Ol i lukim tu olsem save bilong ol long bihain i rong i go 5 i go 10% long wanpela aua, taim man i opim dua o win i senis. Long wanem, win i gat wara o win i hevi i mekim bal i go isi kwik moa. Olsem na program bilong ol i holim tupela kain seting: wanpela long hau kwik bal i go isi, na wanpela long spit we bal i lusim rot. Pleia i stretim gen tupela long olgeta tebol, na gen taim save long bihain i stat long rong.

Ol Eudaemons

Bilong wanem Laboratori i stori long dispela

I no bilong olgeta man i ken mekim. Em bilong soim wanem samting tru i mekim pilai i rendom: wanpela hap yu inap save long en, we kasino i lukautim long pasim bet kwik na long liklik tru namba bilong ful raun; na wanpela hap i paul olgeta, we kasino i lukautim long ol ston bilong sutim bal na ol liklik banis i daun. Pleia i save long dispela i save bilong wanem 2.70% i stap gut.

Mekim kaunting yu yet

Long wanpela strim, taimim bal taim em i go pas long ston bilong sutim bal long tripela raun, na tingim ol raun bihain. Planti taim, yu bai i stap insait long wanpela raun long pundaun. Dispela em hap yu inap save long en, i wok olsem mipela i tok. Bihain, lukim we bal i sindaun tru, long hul i stap aninit long ples em i pundaun, na raitim long faiv ten tanim. Dispela kaunting em i soim hau bal i go nabaut, na brait bilong en em i ansa long askim “bilong wanem man i no inap winim dispela?”.

Stopwatch i taimim bal taim em i go pas long ston bilong sutim bal; kaunting i kamap piksa bilong hau bal i go nabaut.

Fomula

dv/dt = −(a + b·v)
T(raun) = 2πr / v

Ol askim

Model i stret olgeta?

Nogat. Fraksen i senis wantaim das, wara long win na taim wil i bagarap liklik. Ol masin bilong save long bihain i stretim gen long olgeta tanim.

Yu nidim hamas raun?

Tripela i givim save i no stret tumas; faivpela o sikispela i givim gutpela save. Long ol studio, liklik tru namba em fopela, na em i lusim liklik taim tasol bilong putim bet. Na taim bilong putim bet i pinis pinis.

I gat man i kisim mani long dispela we?

Sampela tasol, long sotpela taim, wantaim masin, pastaim ol kasino i senisim pasin na ol lo i kamap. Lukim pilai bilong kisim edj.

Amamas wantaim Matematik

Traim ol dispela yu yet pastaim. Bekim bilong wanwan i hait; opim taim yu redi.

  1. Long model bilong Thorp bilong soim baltulBalLiklik bal dila i sutim long rot i go long narapela sait long rota. Ol nupela bal i ivorine o Teflon, 18–21 mm.Ritim olgeta → i go isi, sapos wanpela raun long rot i kisim T sekon, bal i gat 1/(e^(3T/20) − 1) − 10/3 raun i stap pastaim long em i lusim rot. Hamas i stap bihain long raun bilong hap sekon, na bihain long raun bilong wanpela ful sekon? Liklik rong long kaunim taim bilong 0.012 sekon long T = 0.8 i muvim tok profet hamas?

    Soim bekim

    Bekim Klostu 9.5 raun bihain long raun bilong hap sekon na 2.85 bihain long raun bilong wanpela sekon. Liklik rong i muvim tok profet klostu 0.12 bilong wanpela raun, klostu 4½ hultulHulWanpela long ol 37 hul i gat namba long rota. Narapela nem: slot, cup.Ritim olgeta →.

    T = 0.5: 3T/20 = 0.075 na e^0.075 ≈ 1.0779, olsem na 1/0.0779 ≈ 12.84, na 12.84 − 3.33 ≈ 9.51 raun. T = 1: e^0.15 ≈ 1.1618, 1/0.1618 ≈ 6.18, na 6.18 − 3.33 ≈ 2.85. Raun i hariap i min planti raun i stap yet, na raun i isi tupela taim i lusim i no inap wanpela hap long tri.

    Long T = 0.8 fomula i givim 4.51 raun; long T = 0.812 em i givim 4.39. Liklik rong bilong 12 hap long tausen bilong sekon, klostu taim bal i kisim long ran long braitpela bilong em yet, i muvim tok profet 0.12 bilong wanpela raun: klostu 4½ hul bilong wil i gat 37 hul. Dispela wanpela liklik rong em planti bilong 5.5 hul Thorp i larim long kaunim taim bilong bal (lukim Pilai bilong Kisim Edj long Rulet), na em as na klok, i no kaunim, i pasim man i tok profet.

Liklik lap

Yu inap save inap long pundaun. Bihain, ol ston bilong sutim bal.

Yu inap save inap long pundaun. Bihain, ol ston bilong sutim bal.

Ol As bilong Save

  1. Small, M. & Tse, C. K. “Predicting the outcome of roulette.” Chaos 22(3), 2012.
  2. Bass, T. A. The Eudaemonic Pie. Houghton Mifflin, 1985.
  3. Thorp, E. O. “Optimal gambling systems for favorable games.” Review of the International Statistical Institute 37(3), 1969.
mipela i skelim gen long 2026-09-28model: Yurop, wanpela sirometodoloji ↗ol as bilong save ↗