Representing musical and audio (sample) time in ways that maximises reversible conversion between the two of them. Musical time is typically spoken of (in western culture) in terms of "bars" (or "measures") and "beats". The relationship to audio (sample) time is defined by a "tempo map" which defines the number of beats per minute and the number of beats per bar. The mapping between the two is monotonic, non-linear,…
Ask HN: What weird or hard problems are you trying to solve?
451–460 of 831 posts
Re: Ask HN: What weird or hard problems are you trying to solve?
#452Earlier quoted context omitted.
Well if you're waiting for an invitation, it sounds very interesting!
Alright here it goes. What we're basically doing is using thermal evaporation to lay down thin films of metal on top of each other in a high vacuum environment. We're then patterning the cell with a fiber laser to produce the cell traces and patterns needed to cell size. Here's an example of system that does what i've just described in the context of creating CDTE cells. Note that it doesn't use a laser to create the…
Re: Ask HN: What weird or hard problems are you trying to solve?
#453- Of the countries in the world, none are really free, and generally have quite burdensome taxes relative to their benefits.
- Representative democracy has not improved a whole lot from the v1.0 created a few hundred years ago. For example, voting is largely between "person I don't really like" and "person I hate," and you're just 1 vote in millions, meaning voting is irrational (https://en.wikipedia.org/wiki/Paradox_of_voting)
- In referendums, people vote without really knowing much about what they're voting on.
- There's a lot of people who want to move to a better country, but immigration policies are very restrictive.
Solution:
- To create a new country, Sordelia, based on liberty, sortition, and deliberative democracy.
- Laws are voted on based on a small, randomly selected citizen's assembly. The random selection keeps the assembly small, so every vote counts, yet is statistically significant so that, if a law passes, we're highly confident it would've passed before all the voters. This assembly will learn and debate the pros and cons of the proposal before voting.
- Laws that would violate fundamental principles (like freedom of speech) are disallowed.
- We aim to purchase land from a developing country. There are plenty of good reasons they'd sell to us, beyond the immediate payment. The developing population and infrastructure will bring an increase in trade and jobs for their country. There have been many historical examples of special economic zones (SEZs) having positive influence on their neighbors, and Sordelia's effect on nearby countries will be similar.
- We'll have pro-growth and pro-immigrant policies to attract people to our country.
- The rise of remote work makes this even more attractive for moving to Sordelia.
If this interests you, join us at:
Re: Ask HN: What weird or hard problems are you trying to solve?
#454Earlier quoted context omitted.
Alright here it goes. What we're basically doing is using thermal evaporation to lay down thin films of metal on top of each other in a high vacuum environment. We're then patterning the cell with a fiber laser to produce the cell traces and patterns needed to cell size. Here's an example of system that does what i've just described in the context of creating CDTE cells. Note that it doesn't use a laser to create the…
This sounds cool! Building Scientific Apparatus is a truly excellent resource. Two questions: (1) Could you get away with an inert atmosphere? I'm not familiar with the pros and cons with respect to PVD. (2) It sounds like your vacuum setup will have a long cycle time from vent to pumpdown to operation. A load lock with a (turbomolecular?) pump adds quite a bit of expense. What's your approach to achieving high throu…
The cycle time is of course a highly dependent on the final design of chamber. There's no reason that Sorption and Getter Pumps combined with a ventri prestage can't preform to a degree that meets the design requirements.
However their performance is highly dependent on two things, the ability to reach bakeout quickly and the use of metal to metal seals instead of o-rings.
The actually difficult and expensive part of high vacuum engineering is figuring out how to engineer valves that can both withstand bakeout temperatures and make the tight leak free seals.
In this regard I plan to use what essential amounts to a plate valve with something called, a "powdered seal". This valve meets the requirements for the design in every aspect with it's only downside being that it is slow to change open to close. Though this downside will not reduce the overall throughput of the system as it is designed.
Re: Ask HN: What weird or hard problems are you trying to solve?
#455Problems: - Of the countries in the world, none are really free, and generally have quite burdensome taxes relative to their benefits. - Representative democracy has not improved a whole lot from the v1.0 created a few hundred years ago. For example, voting is largely between "person I don't really like" and "person I hate," and you're just 1 vote in millions, meaning voting is irrational ( https://en.wikipedia.org/w…
Re: Ask HN: What weird or hard problems are you trying to solve?
#456Earlier quoted context omitted.
Personal experience with multiple countries. Studied in both USSR and USA. Witnessed many students struggling in USA. You are right though, many parents can’t teach. That’s the problem I am trying to solve - parents shouldn’t have to go to school with their children.
I didn't mention parents not being able to teach. I just asked where your assumption for that is coming from. Just wondering as I haven't heard of this at all in my home country. Homework is usually quite clear, and the basics to get through it are made clear in the classroom. We had separate times for learning maths, and doing exercises. Have you thought maybe your assumption is based on very very old anecdotal data…
Science homework should be able to be done in little more than it takes to copy it from an A student. It should not take hours, which it often does. I am looking through the lens of disadvantaged students.
Re: Ask HN: What weird or hard problems are you trying to solve?
#457Not tried yet but I’d love to make a JS front end library to “bring your own storage” so that if I provide you with an app online (think SPA) it can then save the data to where he used wants (s3, Dropbox, local disk using extension, etc.) Another similar idea is a very simple rest protocol so that you can save to server and then make it easy to self host it. I like the idea of people building apps as web pages withou…
Something like https://remotestorage.io/ ?
I want to think of an approach that is really easy to use so it becomes popular for that reason.
Re: Ask HN: What weird or hard problems are you trying to solve?
#458Problems: - Of the countries in the world, none are really free, and generally have quite burdensome taxes relative to their benefits. - Representative democracy has not improved a whole lot from the v1.0 created a few hundred years ago. For example, voting is largely between "person I don't really like" and "person I hate," and you're just 1 vote in millions, meaning voting is irrational ( https://en.wikipedia.org/w…
1.) How likely is this to actually happen? Are there any talks with nations for purchasing land? How many members would actually uproot their entire lives to go live in this experimental nation?
2.) I'm absolutely a libertarian, but even if I have to admit that some of those that care so deeply as to self-select for something like this are likely to have some... oddities.
3.) Libertarian principles have never been very popular with women, so I imagine most of the interested parties are men. If this were to last for a long period of time, I would imagine that most of the unmarried men would compensate for that by finding wives from the neighboring developing nations. I don't have anything against that, but I feel like this new nation would quickly get the reputation of being Thailand 2.0.
Re: Ask HN: What weird or hard problems are you trying to solve?
#459I don’t know about other parents here, but cracking the code to my 3.5 year old is a really hard problem for me.
Re: Ask HN: What weird or hard problems are you trying to solve?
#460Earlier quoted context omitted.
Alright here it goes. What we're basically doing is using thermal evaporation to lay down thin films of metal on top of each other in a high vacuum environment. We're then patterning the cell with a fiber laser to produce the cell traces and patterns needed to cell size. Here's an example of system that does what i've just described in the context of creating CDTE cells. Note that it doesn't use a laser to create the…
Really interesting, don't know much about CDTE cell production, Just curious, do you have a small start up working on this or is it mostly theoretical at this point (or are you doing this as part of your day job at a larger company)? I did a bunch of thin/thicker films in grad school and post-doc times and now work on thicker porous films.
I've worked with other PVD systems yet I have not constructed my own. The main goal of this system is to make this sort of thing accessible to as many people as possible for the lowest amount of cost.
As it stands right now I'm learning machining to actually build most of this thing from scratch as I don't have the money to get this machined from from a job shop.