I think that a diving suit or a submarine would be more reliable but not easier. Just for the fact that as this would likely be a privately funded operation and would not be out of necessity but out of curiosity that no supporting infrastructure would emerge with much urgency. Just like the Wright brothers or the actual history of submarines they were invented out of dreams and curiosity not out of necessity leaving them to take years(and in the case of submarines around 200 years) to be truly useful and viable in any manner. And when there is not a push to invent due to necessity, invention doesn’t come from the discovery of new technologies but out of creative application of old methods. So my real question is could a rich Rosharan scientist feasibly create the magical proto-diving “suit.” I agree it might not be the most efficient but it would be the most accessible as the technology already exists. That is more of a clarification of the question, not is this the best method but is it viable.
Also more on the point of science even if the Attractor had to sift through 25 liters of water it attracts in a sphere so assuming you are walking on the ocean floor so only about half of the sphere has usable air. Assuming the repeller is repelling water in a 6 foot radius which would likely need to be bigger and that the attractor is attracting in a 10 foot radius, the attractor would still have access to roughly 45,000 liters of water. Also on the point of it being energy intensive, it would 100% be energy intensive. But with the energy for fabrials literally coming from the sky and with the ability to recharge fabrials with infused spheres and a tuning fork or using unencased gems you could bring more energy to utilize. You could be right that it still just takes too much energy as all it says in the rules for the repeller and attractor is that when creating the fabrial you can set the radius of affect, but it doesn’t set an upper bound on it. This means I could be grossly overestimating the capability of these fabrials but I don’t know. Anyway at least with the Cosmere RPG it says for both the repeller and attractor that standard ones have 5 charges and expend 1 charge per hour they are active so already they have a 5 hour time limit and I would assume under intensive conditions such as this they would likely expend charges much quicker but even assuming they work at one half or even one fifth of normal efficiency, that is 1-2.5 hours. Which like I stated isn’t the best or most efficient but could be a big deal for the curious and rich Rosharans.
Like I said the biggest thing is not finding better or equivalently viable ways to go diving than modern earth has with Rosharan fabrials, but seeing if a current (by book 5) Rosharan could invent a way to spend extended periods of time underwater, without needing to be radiant or the such. So that is why I focused more if the fabrials themselves would have the capacity and capability to fulfill the inane plan I posed. At least currently think the biggest question of viability is whether the repeller can overcome the force of gravity, as the entire viability is based on the capability to create a bubble of dry land. As well it says if the material it is pushing is heavier than the fabrial itself, the fabrial will be pushed not the material. How would this apply to a liquid and with aspects like water pressure and the perception of the ocean itself. Would you treat the “material” as the entire object as it is perceived, such as the ocean or just the portion in the radius of effect. I assume this would apply to solids and fluids differently as to me it doesn’t make sense to only look at the portion in the radius(for solids) because if only a small section of the object was in the radius then regardless of weight(with rules as written) that if as long as that section is lighter than the fabrial, the object will be moved.
You could be right that just creating a fabrial powered diving suit or submarine would be easier but I don’t know how the two function with enough depth to understand the ways a fabrial could aid in there function or replace an mechanical part that they wouldn’t have access to.
What do you think? I could have misrepresented your points and if so I apologize, but I am just pondering viability and want to look at all of the aspects of the physics and interactions with said physics. As well I might be putting too much credence in the rules of the Cosmere RPG, that while cannon has many things simplified and some parts for fun and simplicity are stated with minimal nuance as in most scenarios that much detail just isn’t necessary.
