DEMOLITION PHYSICS FULL

Even cutting almost the entire thing in half right down the middle hardly did anything to make it fall.

Underneath was a ton of empty space until bedrock. Had 3 or more blocks of nothing between it and the closest other blocks on all sides. It was a good sized island and we could build on it, dig on it, jump on it, whatever, and it stayed just fine. It was a large sized pillar and while most of the bottom fell out the top remained stuck in place as a floating island. Requires more testing!Įarlier this week a friend and I shoveled out a pillar in the desert and then cut the bottom out from under it. If you had placed everything you would need on top before the collapse it might even be useful as a base. If you built a big block of wood platforms, could you force this effect? If you could, you could build a ramp to jump onto the floating platform and be utterly immune to hordes. This has some interesting potential applications though.

DEMOLITION PHYSICS FULL

I filled the bottom floor full of TNT and blew it up so the whole thing would start at once. I am sure it would collapse normally if I cut the base out with an augur or something. It looks to me like there is something that goes wrong when collapsing a very large building all at once. Anything you place will immediately break. While you CAN stand on it, you can't build on it. It is only blocks without something directly beneath that break. Even more interesting, if I stand on a block that has another block under it, it DOESN'T collapse. If I try to stand on a floor, that block immediately collapses, but the rest of the floating building just hovers there. It scattered debris for blocks! The apartment complex lost its entire base and started to do the usual collapse of 1 block at a time in rapid fire.Īfter dropping a big chunk of the building, the collapse just stopped and the building is just floating there.

So I went ot the city and started blowing up buildings to see how they worked. Those may be too big as well (I'll get to that). Larger POIs seem to work too, though I haven't tested it on a factory. Normal POIs collapse just fine when you blow out their supports. Finally I will explain how we proved the exponential speed of convergence, its rate and the stability of a system state estimation.So I got the itch to blow things up. Based on this example I will present the repeated non demolition measurement model and show the wave function collapse. In this talk I will explain Serge Haroche's group experiment principles.

These results are useful in the evaluation of the performance of a given measurement method. We also proved that the limit does not depend on the initial state but only on the measurement record. We studied the dependency of this rate with respect to the choice of probes. We found an explicit rate depending on the limit system state. We proved that the wave function collapse with probability 1 and the limit state is distributed as if a Von Neumann measurement would have been performed initially. With Denis Bernard and Michel Bauer we studied the convergence of such repeated non demolition measurements. In their experiment they used atoms as probes to measure the number of photons inside a cavity without destroying them. This situation is typically the one of Serge Haroche's group experiment which inspired the work I will present. The interaction is tuned such that a set of system states are stable under the measurement process. Instead of measuring directly the system, quantum probes interact with it and are then measured. To avoid such destruction one can use non demolition measurements. For example to count a number of photons usually one would need to convert each photons into an electric signal. One difficulty in quantum optic experiments is to measure a system without destroying it. Physics Colloquium: Repeated non demolition measurements and wave function collapse Partager cet événement :

Demolition physics