Casimir kushanda

About 50 apfuura, Henry Casimir akaziva kuti Vacuum pakati hukawanika maviri pane mumwe kukwezvana simba. simba iri zvinogona kuumba yechimurenga zvesayenzi.

Kana ukatora magirazi maviri uye dzishandise navo chinhu pakati pavo kunotanga kukwezvana, nekuti pakati pavo pane Vacuum. Fani iyi yakawanikwa pedyo Casimir muna 1948, apo akanga vaiita tsvakurudzo basa iri pakutsvakurudza centre iri Eindhoven. Fani iyi yave kunzi Casimir chaizvoizvo, simba kuti unovapo pakati magirazi maviri - the Casimir simba.

Kwenguva refu zvaifungwa kuti Casimir chaizvoizvo - hazvina kupfuura varaidza dzidziso. Zvisinei, munguva ichangopfuura pane yakawedzera kufarira chiitiko ichi. It Vakawana kuti Casimir simba zvakananga kunokanganisa nemaziso zvenhengo uye nemhaka mberi hwokugadzira zvokushandisa simba ichi kuyerwa dzakakwirira nemazvo.

Izvi zvingava afarire vamwe inokosha wefizikisi. Kune vazhinji pfungwa, maererano izvo pane zvakawanda zvimwe kuyerwa mu ten- uye gumi-dimensional dzidziso. Maererano nedzidziso iyi, pane mumwe yakatsauka kubva mureza regiravhiti Newton, panguva madaro ari zviduku chikamu chimwe millimeter. Naizvozvo, kuyera migumisiro Casimir maturo, unogona kutarisa hypotheses izvi.

Kudzidza Casimir colloids

Pandaishanda ari pakutsvakurudza centre muna Eindhoven, Casimir akadzidza ehupfumi yo colloidal mhinduro. Ava zvinhu rurefu viscosity, vane PARTICIPLE Ukuru micron. ehupfumi avo kunorondedzerwa Van der Waals mauto - kumberi anoyevedza masimba izvo kuitika pakati mamorekuru uye maatomu vari kwavakarerekera.

Theo Overbeek, Casimir bhururu, akati Fritz London dzidziso kutsanangura mauto Van der Waals masimba anogona kupa akarurama tinyatsonzwisisa ari experimental mashoko. Akabvunza Casimir, kuti iye akashanda ari dambudziko iri. Casimir awanikwa kuti hazvibviri kuti zvakarurama kutsanangura kudyidzana vakachengeta pakati 2 kwazvakarerekera mamorekuru, vachifungidzira kuti ari velocity chiedza chiri kuramba.

Pashure paizvozvo, musayendisiti akati ichi mugumisiro zvinogona kutsanangurwa kana isu kufunga nokufamba atomu. Kusiyana-siyana - ichi izwi, iyo inozivikanwa nokuva ose nokufamba uye nguva nenguva kuchinja. Ipapo musayendisiti vakafunga kuti mamorekuru pane vaviri vanogona gadza magirazi maviri dziri zvayaitenderera paguyo mumwe tichiratidza mapato. Saka ataura simba kukwezvana kuti ariko pakati tichifungisisa mahwendefa.

Dynamic Casimir Effect

Maererano quantum pfungwa, kuti Vacuum haisi chakasviba maturo. Mariri pane nguva simba nokufamba - rakapotsa nezvimedu uye antiparticles vanoberekwa uye kufa. Vanokwanisa kushandisa kumanikidzwa. Fani iyi inonzi "kunofambira mberi Casimir kushanda". Rakanga zvakaratidza nokuongorora. Zvisinei, hunonzi pane simba Casimir chaizvoizvo - kuchinja Vacuum nokufamba munzira chaiyo nezvimedu (semuenzaniso, photons). Ndicho izvi Zvakacherechedzwa nemasayendisiti.

In simba Casimir kutiita ikaitika oscillation girazi, pamwe dzichimhanya kwakanga kwakafanana nokumhanya chiedza. Kuti aite izvi, yefizikisi aifanira kuisa mune simba remagineti, simbi hukawanika. Speed nokufamba munda uyu gumi bhiriyoni nguva muzana wechipiri. The pemvura akatanga deform pamwero wakanga 5% chiedza, uye kwaita photons kwave vakanyorwa panguva goho. Pachishandiswa ehupfumi pamusoro photons, zvaigona angapokana kuti vanoonekwa vari vaviri vaviri.