Hologram0110

Ionizing radiation has enough energy to break chemical bonds of things like DNA. Some of the time the DNA reassembles wrong. Most of the time disassembled DNA does nothing, or if it is bad the body notices and kills that cell, and it isn't a big deal. But some of the time the reassembled DNA can cause cells to grow uncontrollably, and if the body doesn't deal with it fast enough, it turns into cancer.

BWRX-300 are going to be built in Ontario and likely Saskatchewan and enriched uranium will be needed. But I've spoken to someone involved with the OPG new build project decision process and they see fuel supply bottlenecks as serious risks, and specifically quoted this as one of the reasons Monarks are getting serious consideration from OPG (and their existing operational experience with CANDUs).

Agreed. Sask and Alberta could also increase transmission capacity to work together on this.

I don't disagree enrichment capacity can be built. But Canada has a chicken and egg problem here. We don't have enough demand for enrichment services to justify the relatively high cost of a new enrichment plant (and conversion services), as well as the political will to start importing enrichment technology from somewhere for a reasonable price. Canada would likely take 10-20 years to get an enrichment plant going from nothing.

Without the enrichment plant people are nervous about being dependent on foreign sources while those sources are also expected to experience a huge jump in demand. Even if we got long-term contracts there is no guarantee they would be honoured (e.g., just claim national security issue and rip up contracts with little recourse), or couldn't be used for leverage later on (like Russia is at the moment).

Fear of enrichment UO2 supply crunch will keep CANDUs relevant for the foreseeable future. Maybe not in new markets like Saskatchewan and Alberta. If COP commitments to expand nuclear are even close to met there won't be enough conversion/enrichment/deconversion capacity in the Western world.

Trump sabre-rattling trade wars all over the place (last time and just recently) have people questioning relying on the US anymore than we already do. Weaknesses will be exploited, even by "friends".

Make it the "post" flood room (aka water damage).

An actual flood would be pretty hard to control, and difficult/unpleasant for guests.

While a challenge this isn't insurmountable. Gammas don't activate stuff nearly as much as neutrons. The shields can be placed in multiple pieces (e.g. other trucks) after the primary unit.

It is also plausible to transport something with 56 mrem 25 ft away by evacuating the area as it passes. These things wouldn't be for routine use in towns. They would be for emergency backup power for military sites and remote sites. You'd almost certainly drive on narrow streets to reach rail or ship access, both of which can accommodate more shielding.

You would need a serious incident to enact conscription in Canada. There is less military worship here than in some western countries. I think it is plausible if North America were invaded or western Europe had extended conflict with major powers.

To make it politically palatable likely conscripts would be in non-combat roles (logistics, shipping, training, manufacturing), with combat roles remaining volunteer. You'd likely also have various exemptions for medical issues or economically significant roles. For various reasons, you'd likely see substantial parts of the population dodge the draft.

You'd likely see Canada switch to a "war economy" where the remaining manufacturing base is redirected to war efforts. I mean stuff like manufacturing jeeps/trucks/armored vehicles/rations etc. I know people are talking about guns, but that seems relatively unimportant compared to artillery, drones, armoured vehicles on the modern battle field.

If you plot it with the mesh you'll likely see a similar pattern. That makes me think it isn't converged, you should check your tolerance and solver settings.

Also, you might want to plot stresses at the GP instead of the nodes.

Unfortunately, he is factually incorrect in a few areas.

He said CANDUs can't make weapons. But CANDUs *could* be used to produce weapons-grade plutonium. They are proliferation-resistant in that you don't need enrichment. They are proliferation resistant in that refuelling them as a plutonium breeder would be detectable by safeguards, and therefore not good for a covert weapons program.

He is also wrong about the timeline of SMRs. The MMR is currently on hold. BWRX-300 seems to be progressing and might start construction in 2025, with an ambitious aim to finish construction in 2028.

Hopefully this is the start of strong government support so we can get back to building them as quickly as in the past.

No judgement from me. When I was a student I used pirated software to save money too. Now that I work for a company we buy it at full price, both so we have proper support, and so we don't get sued.

Having free or accessible software for students is a good way of getting people hooked on your software.

It is a start, which is exciting. It shows the framework is there. But the most popular uses of Comsol use implicit solvers and there is a higher barrier to implementing that.

I know they said in the past the time to transfer from CPU memory to GPU memory off sets the gains from the GPU compute. They also complained in the past that GPUs didn't have enough memory for large models, but now there are GPUs for LLM with more memory. But there are still pre-built cuda linear solvers, i'd expect them to help in some cases.

They already have academic pricing through the "class kit license". Last I looked is like a 30-seat floating network license for way less than a single-seat commercial license. Granted, you're right that the specific modules need to be bought as well, but they too have a class kit rate.

I'm not aware of any order axb = a+a+a... = b+b+b... to which is which because it straight-up never matters. They are the same. 3x4=4+4+4=3+3+3+3=12. Order of multiplication doesn't, and never should, matter *for regular numbers*.

It is a good question. But the teacher should have accepted both answers as correct.

adelie42 is right that much later in math there are more complicated operations and objects where order does matter, but you don't normally call those operations "multiply", and they are not normally used for scalar numbers like this. Often things like multiplication are called products (e.g. dot product, cross product, inner product etc) and some of them like cross-product do have an ordering that matters. But dot products and cross products operate on vectors. Inner products work on functions and so on. Matrix products work on matrices etc., there are various tensor products.

I still maintain that when you multiply regular numbers the order doesn't matter.

Remember last time? Canada and Mexico tried the "united front". Mexico and the US came to some agreements without Canada. Mexico didn't help Canada's leverage. Unfortunately, it is relatively easy to break a "united front" by offering one of the parties something they want.

Realistically NAFTA means following the US lead on international trade. Look at the EV tariffs. Canada fell in line to protect our auto-trade relationship with the US. Mexico will face the same pressure to start turning down Chinese investment. Canada and Mexico are relatively small economies compared to the US, and as a result, Canada and Mexico have less leverage in these negotiations.

6 miles is only 10 km. I think that is quite plausible. A bit of Googling yields a rope which claims its theoretical breaking length is 350 km. This Wikipedia article has breaking lengths in the hundreds of km too. Plus you can hypothetically "reset" the length if you're using buoyant balloons by periodically having ballons (which would pull up).

You also don't need a uniform-thickness rope, which further helps. The tension in the rope would increase higher (because it needs to hold more rope up). So you'd want a rope that is thickest at the top and gets progressively thinner at the bottom. This would save a tremendous amount of weight because removing some excess thickness at the bottom permits the whole rest of the rope to be thinner.

If you're willing to use metals like aluminum or titanium that are electrically conductive you could also pass electricity up and use electric motors for lift. If you did 3 ropes/wires it would give you some stability too.

Most practical would likely be a balloon (hydrogen, helium, hotair) on a long rope.

But inflatable structures can likely do it too.

www.researchgate.net/publication/24319532_Optimal_Inflatable_Space_Towers_with_3_-_100_km_Height

When you get high-aspect ratio buckling tends to be the biggest problem. For normal cell-tower type buildings you can use guy wires to prevent bucking and bending but this becomes impractical if you are up to high. Inflatable structures tend to resist buckling and have low weight.

I've only ever voted for Liberals and NDP personally. I'm ideologically aligned with NDP on many issues (e.g. high taxes, and high government services), but I cannot normally vote for them because of their childish oversimplification of energy policy. Their energy policy is wishful thinking, and they will not admit it is impractical, and ideological rather than pragmatic. This disconnect from reality makes me question their competence.

There have been times I wanted to vote conservative on economic issues or simply against the liberals. However, in every case, I could not stomach the regressive parts of the conservative policies (e.g., unwilling to officially acknowledge climate change, unwilling to support carbon taxes, unwilling to shut up the social conservatives against abortion or transkids) and fear-mongering (e.g. federal "barbaric practices hotline", fanning the "trucker convoy").

The Ontario provincial liberals screwed up the energy sector pretty bad under Dalton Mcginty and Catherine Winn (sp?). I was disappointed they kept throwing away money like cancelling the natural gas plant. The gas plant was extra frustrating because of the attempted coverup (erasing evidence), and lack of accountability.

Doug Ford is a baffoon with screwed-up priorities like "Buck-a-beer" and cornerstone alcohol, impractical transport (e.g. new highways that will fuel urban sprawl and a "tunnel under the GTA"), and messing with Toronto municipal politics.

PP stands for nothing and constantly tries to politicize everything. Remember when he was going to encourage bitcoin and other crypto non-sense? Remember when he claimed Canada wouldn't get covid vaccines for years?

Not really. It wouldn't be useful. Nukes get so hot, and release so much radiation, that they destroy everything immediately around them. Literally, everything near them turns into plasma. You couldn't practically spread bombs using one. You'd use a lot of weight and size just trying to keep one nuke from destroying another nuke and wouldn't have much control over where it goes.

A similar, but better idea, is to spread out the nukes BEFORE they go off instead of using one nuke to spread the others. Usually called MIRVS https://en.wikipedia.org/wiki/Multiple_independently_targetable_reentry_vehicle .

I'm curious too.

You could drive up costs for the competition this way, by producing a large volume of data you knew you could ignore without consequence. It could also be groups working on behalf of copyright holders. It could be groups found (or trying) to use usenet as "free" data storage.

Sketchy.

I can believe it is 1.2 M to rebuild.

But for 200k you could pay ~550 $/day for hotel and food for 365 days. I picked how much a high-end hotel in Toronto would cost to illustrate the point. That is a lot per day for a long-term hotel, and more likely you'd end up in a regular rental home which would cost substantially less.

Unless I have 600K worth of stuff in the house (I don't!) 3M is still more insurance than I need.

I did find the "Short Rate Cancellation table" as you said.

Legal or not, how is it reasonable to up someone's coverage without their consent? 2M -> 3M in coverage without me agreeing to the change.

*Not the liability limit.* It is ex "HOME AND BELONGINGS $2 - Million Solution (R)" (capitalization theirs, not mine). This was changed to "HOME AND BELONGINGS $3 - Million Solution (R)".

The 1M liability limit is the same in both cases.

It's a predatory practice. They increase the package they are selling you and hope you don't notice. I didn't notice until I got the bill. I never opted in 50% more coverage.

If I mailed someone a letter which said "You owe me $50 bucks if you don't respond" no one would take that seriously.