7/3/2023 0 Comments Rewind button![]() ![]() Half of it was tangled in the take-up spool, If the button were stuck in, you would still be able to cock the shutter, but the film would not advance, and you'd end up with a double exposure (or more).īut the rewind release button was stuck (and still is) It disengages the film advance so that you can get the film off of the take-up spool and back into the can. If where you got the camera from declared it as in mint or great condition, you may want to return it if it is, in fact, not perfectly working. The rest of your post directly contradicts this. I recently bought a perfectly working Mamiya 528AL My question may be silly, but do I need to repair the rewind button - and do you know more or less how much it would cost, just to get an idea - or can I rewind the film without pressing it? I decided to open the bottom of the camera and check if there was something stuck next to the rewind button but I didn't find anything (although I noticed a sticky liquid a bit everywhere.is that normal? Could it be old grease for the gears?). After that, the advance lever was working perfectly again. So I opened the back of the camera in a dark room and took the film out and half of it was tangled in the take-up spool. But the rewind release button was stuck (and still is): I couldn't push it down. I didn't know whether the film was advancing or not, so I decided to rewind it to save the pictures I had already taken. As for the second roll of film, after a while I noticed the film advance lever wasn't working as smoothly as usual and the exposure counter wouldn't advance (stuck at exposure #18). Pictures from the first test came out great. ![]() This finding, according to one of the researchers, Philip Walther, has practical implications, as he said that it could have “technological applications,” such as a “ rewind protocol in quantum processors used to reverse unwanted errors or developments.I recently bought a perfectly working Mamiya 528AL. The finding isn’t a time machine, the scientists emphasized. They pointed out that unlike earlier discovered protocols that offered a certain “probability level,” the new mechanism can be relied upon to always prove successful, unless the experimental device is totally “invisible” to the qubit – the basic unit of quantum information in quantum computing.Īs to whether one could replicate this experiment with a human, the team explained it would be practically impossible. A “quantum switch” experimental device was used to allow a photon of light to revert to its previous state. David Trillo proved this, both in theory and experimentally, by using a photon that evolves while passing through a crystal. The scientists have revealed in a spate of papers published on preprint servers that quantum particles – the smallest physical particle that can exist without being broken down – can be rejuvenated or reverted to a previous state.ĭeveloped by scientists from the Austrian Academy of Sciences, a “rewind protocol” enables any particle, such as an electron or proton, to revert to different quantum states from different points in time. “It’s possible to “ accelerate, decelerate and reverse the flow of time within arbitrary, even uncontrolled quantum systems,” Spanish researchers Miguel Navascués and David Trillo, from the Institute of Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences (ÖAW), along with Austrian researcher Philip Walther, and the University of Vienna’s experimental physics group have discovered. “We have made science fiction come true,” a collaboration of scientists has announced, claiming they have discovered a trick to speed up time. Scientific theories about time travel abound, interspersed with terms like wormholes, black holes, and space-time warp. The possibility of time travel – the concept of movement between certain points in time – has long captivated the minds of both scientists and science fiction writers alike.
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