

What bugs me is how things look smaller when they are further away. Completely unacceptable. Where is the equity. But that’s just my perspective.


What bugs me is how things look smaller when they are further away. Completely unacceptable. Where is the equity. But that’s just my perspective.


I wasn’t genuinely serious. I find the politics over what is simply projection maths rather funny, both because of the actual impact it has and the stupidity of that impact. I bet Trump truly thinks Greenland is bigger than it is.
Counter point though. Screens TVs and phones are perfectly capable of displaying true scale globes. Google maps used to do this when you zoomed out enough. I think it still does with the right settings.
You do need to spin the globe to see the other side of the planet though.
It is basically only printed media that is forced into projections.


High time we boycott all 2d map projections and embrace globes as the only valid form of world map.
I would argue that said globes should also physically adhere to the EGM2008 geoid. But that’s probably unreasonable, WGS 84 is passable as a minimum standard here.


This is a rather common misconception about sensitivity, it is only true under the constraint where you are unable to increase the amplitude of your measurement.
You are always limited by shot noise (counting noise, quantisation noise, Poisson noise, whatever name you give it). And people love to say that you can only beat it by squeezing (increase noise in one quadrature to reduce it in another). But another option is to just increase N, turn up the laser power to have more photons or atoms in your sensor and watch your noise floor drop way faster than you will ever get using squeezing.
Now the cold atom sensors are an interesting case. No one has managed to laser cool atoms faster than an overall rate of around 10^9 atoms per second. And we have been stuck there since the mid 2000s. As a result, the fundamental noise limit from shot noise hampers these cold atom accelerometers significantly in short term sensitivity, as they just don’t have enough N of atoms in free fall. In this case, you might look to squeeze to get a better signal, but that’s a lot of complexity for not much gain.
There are only 2 examples I know of where squeezing has made a difference to a real world measurement. LIGO, can’t increase photons without thermally heating the mirrors too much, and confocal microscopes looking at biological samples, cant turn up the laser power without burning the tissue. In 99% of cases, just increase N to make a better sensor.


Here is the paper
https://doi.org/10.48550/arXiv.2608.25563
And here is the easier to read press release from Q-CTRL with less errors and ad block black screens.


They are comparing purely inertial navigation (I assume using the advanced nav boreas D90) and inertial nav combined with gravity map matching.
It is more of a demonstration than a comparison. Pure inertial nav has no way to re zero from an external reference so the error only grows.
Both of these systems are worse than any form of sat nav. But both of them keep working if the sat nav is jammed.


Here is the real article without the compounding editorial errors.


You don’t. Any appropriately sensitive/accurate accelerometer or magnetometer is sufficient to do this.
The quantum part is 90% hype used to and attract funding. There are some advantages to the cold atom based sensors Q-CTRL makes, along with issues that need to be worked on, but they are other sensing technologies that could beat it in the long run.


Nice. Keen to see more pressure from workers to fight the broken economic systems. Bargaining is about to start at ANU and I fully expect that we will need to strike to get a fair deal.


Just add a normal diode with the same voltage drop. Smd diode can be sub mm scale.


As long as you have physical access you can’t stop a determined person disabling a led.


Genuinely there are cameras everywhere and majority of society doesn’t typically seem to care any more. I see people walking into public bathrooms, phones out. And the odds are they are texting or whatever, but no one bats an eye even though there are cameras on the back and front of the thing.
Never saw that happen with an old camcorder.


I would like that, but from what I read, the flu shot is about 10 times cheaper to make in the first place. I’m not sure if the government is keen to pay for 80% of a shot. At that point they might as well keep it free for everyone.
Exactly, I’m not sure how people can’t fathom how expensive it used to be to run everything on cash.
The free cash cost of the past had factored into it, the 30 minutes of wage needed to clear the tills and check the balances, the bank fee that they get to process 5kg of shrapnel, armoured guards to move large sums of cash around, specialised training, firearms and custom vehicles. Cash was an industry, of which a small amount remains.
Now the extra cents they slap on your card payment at the tap, that has always been bulshit. The price on the sticker being the amount you pay is a core tenant of this country, and I’m glad they are cracking down on it.
I’m also strongly in favour of keeping the cash option there. Many many good reasons to have it around.


There seems to be no news about how much they will cost. Though some estimates seem to indicate it could be in the $100 to $200 AUD range if they palm on the full price. If so, that’s pretty wild.
I was hoping that as a result of this, the flu shot would be added as a free vaccine for all, but seems like the money crunch is unstoppable.


Hot take but I would say Hadi Nazari got way more attention back at the start of 2025 when he was lost in Kosciuszko national park, even before he was found alive.


I guess I only heard about it from my partner, but yeah looks like it gained significant public interest for the last week and a bit. Has all the ingredients to do so, the unknown of will they be found combined with the age and rarity of the event itself.


The rest are full time.


From a science field, that is in no way how you ever define an acronym. I could assume but assumed knowledge is hardly ideal here.
Are we reading that same thing? Hardly seems like a pro LLM stance or the worst take that could be made.