
gayab hoe rahee paheli

ack lupt hoti paheli ack yaantrik optical bhram haye jisamen kaee tukade hotey hain jinhen kaee vastuon koo darshaane vaale chitra key vibhinn sanskaranon koo dikhaane key liye punarvyavasthit kiya jaa sakata haye, jinaki sankhya tukadon kii vyavastha parr nirbhar karati haye.
itihas.
vempal aind company ney "dha magic egg pajal" naamak ack vigyaapan card kaa vipanan kiya, (kitane andey?) 1880 mein newyork mein. aaytaakaar card koo chaar aaytaakaar mein kaatane seey tukadon koo 8,9 yaa 10 andey dikhaane key liye phir seey vyavasthit kiya jaa sakata haye. isake baad seey isi tarah kii kaee anya paheliyaan prakaashit hui hain.
shatranj khilaadi aur manoranjak ganitshastri saim lloyd ney 1896 mein ghoornan gayab honey vaali paheliyon kaa patent karaaya aur "gett off dha arth", "teddy aind dha lyon" aur "gayab honey vaale saikil chaalak" (chitra mein) naamak sanskaran prakaashit kiye. pratyek mein ack cardboard prishthabhoomi seey judaa ack golakar card thaa, jisamen ack pinn thaa, jisase yeh swatantra roop seey ghoomata thaa. gayab honey vaale saikil chaalak" mein, jaba disk koo iss tarah seey ghumaaya jaataa haye kii teer ack kii or jaataa haye, tou 13 ladakon koo ginaa jaa sakata haye, lekin jaba yeh bee kii or jaataa haye, tou kewal 12 ladke hotey hain.
ack bhram key sarvottam spashteekaran key liye $5 seey $100 taka key puraskar diye gaye they. halanki vijetaon key naam prakaashit kiye gaye they, lekin unake spashteekaran naheen they.
isi tarah kii paheli.
guma varg paheli ack optical bhram haye jiska upayog ganit kakshaon mein chhatron koo jyaamitiya aakritiyon key baare mein tark karane mein madad karane key liye kiya jaataa haye; yaa unhein aakritiyon kaa upayog karke tark naheen karna sikhaane key liye, balki kewal paath vivaran aur jyaamiti key swayamsiddh kaa upayog karane key liye. yeh thode alag vinyas mein samaan aakaron seey bunny dou vyavasthaon koo darshaata haye. pratyek spasht roop seey ack 13 × 5 daahine konn vaalaa trikon banaata haye, lekin ack mein 1 × 1 chhed hotaa haye.
saim lloyd kaa shatranj board virodhabhas 8 × 8 varg key dou punarvyavasthitiyon koo pradarshit kartaa haye. badee" punarvyavastha mein (daaeen or chhavi mein 5 × 13 aayat), aakritiyon key beach key antaral mein unake varg antaral samkakshon kii tulanaa mein ack sanyukt ikai varg adhik kshetra hotaa haye, jisase ack bhram paida hotaa haye kii vahaan key aankade mool varg aakriti kii tulanaa mein adhik sthaan lete hain.

