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39 points · 1 month ago

ElI5... what’s going on here? I know it’s a nuclear explosion but are the seemingly jagged edges actually just emitted energy? Thanks for any clarification!

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97 points · 1 month ago

You’re seeing the very first millisecond of the nuclear fireball. This will get much much bigger as it expands outward and eventually rise upward forming the traditional mushroom cloud.

Thats a low yield bomb detonated from a tower a hundred feet high or so. The spikes at the bottom are the guy wires holding the tower vapourizing.

whats funny is that there is research showing potential medical use for all of those examples.

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3 points · 1 month ago

And all of them are extremely cheap to produce and are not protected by drug patents.

Profits over people.

The thing is, a phone is (usually) designed to feel good in the hand or look extremely good. It's a buying factor for a lot of people, yet they cover it all up. It's understandable if you don't want to break it or keep it pristine for higher resale value, but damn it's sad seeing these beautifully designed phones covered up :(

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I used to design phones and the durability tests were absolutely insane. A modern phone wouldn’t even come close to passing the quality standards we were using 15 years ago.

We used to to drop phones 100x from a meter onto concrete and the design was considered insufficient if we saw a single failure....... That’s the same phone. Dropped 100 times.

My iPhone would shatter on the first drop.

-5 points · 1 month ago · edited 1 month ago

Just hope the fence and ride slower so that you don’t set anything on fire.....

Edit: It’s a joke guys... Unless you actually set stuff on fire with your bike...

223 points · 1 month ago

You buy the chemical luminol, dissolve it in a basic solution, put it in a syringe, and squeeze it into bleach.

If you mean how do you make luminol, you take phthalic acid, make it the anhydride by heating the dry powder on a hot plate and letting it reform on a cool surface. Then you react it with nitric acid to form nitrophthalic acid. Recrystalize from water to remove the 4-nitro isomer. React with hydrazine sulphate to form 3-nitrophthalhydrazide. Reduce with sodium dithionate to form 3-aminophthalhydrazide, which is the fancy name for luminol.

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39 points · 1 month ago

That’s the chemists solution.

I’m an engineer so I’d probably just order it off amazon.

Original Poster1 point · 1 month ago

So I put some weight in the nose cone, and the stability got to like 1.04. However, the altitude was lower... how could this be if this means it was more stable and flying straighter?

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OR doesn’t do real dynamic simulations. It uses mass and drag to come up with an estimated altitude based on a lot of reasonable assumptions. If the rocket is truly unstable, it’ll just flip around in the air and go nowhere in real life - OR doesn’t simulate that.

This is almost entirely false. OR really does do truly dynamic simulations, in all 6 degrees of freedom. It absolutely does simulate an unstable rocket flipping around in air. It's very easy for you to test this yourself. Make a design that's just barely stable and add a mass object to the nose until it's stable. Then move the mass object back and watch what happens to the results of the simulation.

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That was typed in haste but thanks for the clarification. I wasn’t implying that OR won’t simulate instability, more that you should trust the result far less if your stability is marginal.

OR isn’t going to show you the exact flight path of an unstable model. It will get pretty darn close if the model is well designed though.

There is a reason behind it, it plays well with his phony tough guy fascist base of bigots.

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17 points · 1 month ago

Real god fearing ‘Murcians don’t drive those queer u-rope-een cars!! Who cares if those elites have to pay more?

/s

We are living in a Orwell novel.

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4 points · 1 month ago

I tried re-reading 1984 last year. I got 2 chapters in and had to stop.

Comment deleted1 month ago
37 points · 1 month ago

What can’t you compel doctors to accept Medicare?

Legally, Doctors in Canada can only bill the government. Seems to work fine.

[deleted]
-17 points · 1 month ago · edited 1 month ago

[removed]

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35 points · 1 month ago

You guess? Canada has been single payer for 60 years. If you want a model that works, look to literally any other country..........

It’s not perfect, but it’s a hell of a lot better than the shit show in the US for the 90% of people not wealthy enough to afford good insurance....

3 points · 1 month ago

I had the Galax star express from 1988. There was an expansion set with straight and curve and up / downgoing tracks. But iirc there was a new expansion set presented because of this airport shuttle set, which uses the same track and motor technic. And this expansion had switches!!! I wished I had ever gotten this...

... And dumb as my teenage mind had been, I sold the express 🙄

Such a great technic! I wish Lego would come up with another monorail system!

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2 points · 1 month ago

I have the space monorail (the original one - 6990) and picked up an expansion set of curved and straight pieces while in Europe back in the 90s. No switches tho.

LEGO should bring this back.

Original Poster5 points · 1 month ago

Hugely expensive is an understatement.

For those of you who do not live in Ontario the toll highway (407) is $0.50 / km

I usually take the 407 for half of my drive....which is still an hour drive, and it costs me a good $400 a month.

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2 points · 1 month ago

Costs me $70 to take it from the 401 the end and back when visiting family up north.

Honestly, it’s disgusting but I’d pay twice that to avoid sitting on the 401 for 3 hours.

And to think we sold it off.........

3 points · 1 month ago

Ooh... That red canopy is cool. Don’t think I’ve ever seen one.

This needs some clarification:

This legislation changes the impaired driving laws to give police new powers to conduct roadside intoxication tests, including oral fluid drug tests, and makes it illegal to drive within two hours of being over the legal limit. For example, the bill states that having between two and five nanograms of THC per milliliter of blood would be a summary criminal conviction, punishable by a fine of up to $1,000.

How can you estimate your consumption? With alcohol it's pretty easy as drinks are pretty much premeasured with a known strength.

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13 points · 1 month ago

2ng per ml means you’re likely over the limit on your way to work if you have a puff before bed.

This is going to be a total shit show.

15 points · 1 month ago

Firebase applications use a key to connect to services such as the database. Every user has access to the same key, regardless of who they are authenticated as, so in practice anyone can make any arbitrary call to your database using the key from the application with very little effort.

To prevent this, Firebase uses what are known as security rules to ensure that only certain data can be written to or read from the database, depending on a number of factors such as the format of the data or the user that is making the request. By default, the security rules are set so that anyone can read or write anything, and it is intended that you change the security rules to fit your application before going into production. It seems that many developers neglect to do this and are instead trusting clients to not call the database in an unexpected way.

I don't think Google is at fault here, but what I believe they should do is have databases be secure by default, requiring developers to explicitly define security rules for what is acceptable. If developers want to make their databases a free-for-all by giving all users unrestricted read and write access, they'll need to make a conscious choice to do so.

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5 points · 1 month ago

This. I do a lot of work with Firebase.

The docs on their access rules are pathetic though. It’s no wonder people screw it up.

304 points · 1 month ago

This is a problem in modern society. A lot of dumb people don’t know they are dumb. Maybe it’s because their friends are too nice to point it out. I’m glad my friends are a bunch of assholes.

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195 points · 1 month ago

Think of how stupid the average person is... then realize that 50% of people are even dumber than that.

  • Carlin
273 points · 1 month ago

Seriously, wireless signal is exactly as dangerous as a light from a light bulb.

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78 points · 1 month ago

Screw microwaves... Have you heard about tetrahertz radiation?!? Everybody be afraid!!!!

Uhmm because it's not that easy. The provinces need time to figure out how they are going to sell, distribute and tax it. They need to set up the foundations for preventing minors from getting it and to test for it with impaired drivers.

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-10 points · 1 month ago

But everybody who wants to smoke already smokes and nobody cares. You can go to your local weed store and just buy it... Today.

Honestly, if this law means that children have more access and driving is more dangerous than it is today, it was an utter failure. They should have just decriminalized it and left things as they are.

This law would make it harder for children to have access to weed. The same way it's harder for them to get alcohol. Obviously it doesn't stop them, but it is a deterrent to some kids and to most sellers. A weed dealer wouldn't care if he sold to a 17 year old, what he's doing is illegal either way. A licensed seller however, will face huge fines for selling to a kid.

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0 points · 1 month ago

Harder to get alcohol than when? Prohibition?

I just can’t believe that any of this will make it harder for teenagers to get weed. If they want it, there’s a market for it and somebody will step in to serve it. It’s jail time to sell weed to kids now and that doesn’t stop anything. Weed dealers can just get their weed from the store legally now so it might make black market weed a bit more expensive, but even that’s unlikely.

The government needs to sound like they’re saving the kids though. It plays well on the news.

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9 points · 1 month ago · edited 1 month ago

Nuclear waste is small in volume, how viable would it be to launch it into interstellar space, voyager style?

Edit: ok ok I'm an idiot. To be honest I thought it was way way smaller in weight and volume than it turns out to be!!!

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19 points · 1 month ago

Now what happens if your rocket full of nuclear waste blows up over a city?

It bad enough with a rocket full of hydrazine goes boom...

No I don't care about that.

If it was white canadians i would feel the same way. Shit many hispanics are "white"

You can't illegally sneak in a country. If you are caught you should be sent back.

Canada would send me back if they caught me. Would they not?

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9 points · 1 month ago

I know white Canadians living in Arizona on expired visas. Not once have they been randomly pulled over and asked for their passport and deported. Nobody really considers them “illegals” - they’re just old people who don’t like Canadian winters. I have personally been pulled over by the border patrol in Arizona... They didn’t even bother to look in my passports of the 4 Canadians in the car. We could have been living there for illegally years. I’m pretty sure being white and speaking English was a big factor in their complacency...

And no, you wouldn’t get deported from Canada if you snuck in (which is trivial to do). US citizens can travel here fairly freely. At most, you might be asked to go to a border crossing and get a tourist visa.

7 points · 1 month ago

The perfect defense. What now democrats?

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7 points · 1 month ago

To counter this cunning move the democrats have nominated a potato for president in 2020. No wait, their corporate donors have decided on a turnip instead.

2 points · 1 month ago

When he finishes up, he looks like he’s confused as to where he is lol...

Making your own tubes is some serious dedication.

I scratch buil but I’ll buy tubes, couplers and other parts. I 3D print a lot of things but if I couldn’t, I’d buy parts like centering rings, retainers and nose cones. I’ve turned a few small balsa nose cones... Tubes are pretty cheap and I usually just order a bunch of different sizes I can use for airframes or motor mounts.

Bulk materials like Kevlar, elastic, fabric for chutes, eye hooks, swivels can all be found around... Craft stores, hardware stores, etc...

I often buy bulk stuff (especially electronics) from China off amazon. Takes a month to get here, but the price is usually right.

For design, Open Rocket.

Original Poster2 points · 1 month ago

Where do you buy your tubes?

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2 points · 1 month ago

If you’re in the States, Apogee is great...

If you’re in Canada, allrockets.ca is the place to shop.

Elsewhere in the world, I’m not sure.

7 points · 1 month ago

The V2. Despite being a weapon of war, it was the foundation for the rockets that would eventually power both the American and Soviet space programs.

Her Astro-Majesty Julie Payette lauches her assent rocket so that we can all enjoy the Space Weed and get some serious altitude.

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4 points · 1 month ago

Already high I see!

Hey there, bud, can I interest ya in going out fer a rip on my skidoo? Just a couple of clicks. Don't forget yer toque. We'll ride aboat and stop by the LCBO for sure to grab a mickey of vodka and fill our boots with jambusters on the way back to watch Hockey Night in Canada and good ol' Don and Ron. Just don't take a swig or else the mounties'll get ya. Fuck the Leafs, eh?

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3 points · 1 month ago

Yeah, sorry bud. I totally forgot to grab a two four at the beer store. Put on some Hip. Let’s grab some ceasar mix and some ketchup chips too eh?

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