pressed

Willing to give away, can't make it to the concert

Some personal stuff came up and I can't go to the Montreal concert tomorrow.

Not really looking to make money off these tickets. I paid $63 each, so maybe you could offer me $30 each?

I'll check this post and my DMs tomorrow morning.

Hi everyone,

I recently discovered Alpenblick Farm just west of Kanata. They have free range cows and goats and are committed to extremely humane and sustainable practices.

The farm is run by an elderly Swiss couple and they also sell jam and preserves made by themselves or the community.

Even if you don't believe in eating animals or cheese, you can support this farm for representing what sustainable meat eating looks like.

I don't have a strong association with them. I've only been twice. But today I found out one of the owners has had an emergency surgery and won't be able to take care of the animals for the next six months.

If you have money to share, there is also a [GoFundMe whi

What I'm suggesting is basically a combined referendum and election. The referendum wouldn't have to be done simultaneously.

In the US presidential debates, the moderators asked key policy questions. The public is then supposed to choose a representative based on each candidate's response to those 10+ questions.

Why not just ask those 10+ questions to the public? Should we build a wall? Should we reform healthcare? etc.

The elected candidate is then expected to follow the public's desire.

This idea is supposed to help reduce polarization in the US. If you think it isn't a good solution, what's yours?

After lurking this sub for a while and still understanding zero, I am looking to read a book or take an online course.

The book Getting started in Electronics from the wiki seems best. (The wiki list is quite long.)

I'd also like to look at the MIT course but the link is broken. What is its name?

Mods, feel free to delete this post after editing the wiki.

Hey r/ottawa,

The headphone jack in my 2008 Civic is broken, it has no bluetooth, and the speakers are kind of shit.

I considered working on all this myself, but after 2 years of procrastination I'm willing to throw money at the problem. Does anyone know a guy?

(Also, any idea if this is worth it? I do want to get a new car but this one has a few years left in it)

A while ago, I read a research article published in Science which introduced metalenses, using a figure which compared the working principles of a metalens, diffractive lens, and refractive lens.

Recently Metalenses at visible wavelengths by Khorasaninejad et al. was published in Science, but it doesn't really explain the metalens principle, so I'm searching for the preceding article. It's not cited by K et al., and a lot of googling has failed... anyone know what I'm talking about?

Here's my scenario:

• I'm fitting well-characterized curves to spectral data

• I can be quite sure of how many curves I should fit (typically, 1 < j < 5)

• I can't be quite sure of the x location of the curves, so I want to use Monte Carlo to evaluate the sensitivity of the fit to the x location

• I can safely assume a normal/Gaussian distribution of errors in x, N(mu,sigma)

If I do this for one spectra, I can easily take 500 random samples from N(mu_i, sigma_i) for each of the j curves. Done. But I have a huge number of measurements (say, 1E+06). So for practicality I need to be less brute-force.

My idea is the following:

For the case j==1, I could easily take samples at mu

It happens to me all the time, and it happens to those around me, and maybe it happens to you: You miss an error because it luckily gave you the right answer.

For example, I just calculated that something was 100 cm long. I expected 10 cm, so I immediately saw that I forgot to take the square root. But if the answer had looked right, I would never have caught it.

How do you avoid this? Do you have a standard technique or approach? Do you just try to be super careful all the time, or does maximum carefulness mean you'd never get anything done?

There's also a parallel in writing and typos, but let's talk about calculations.