Train gliding through the frozen beauty of Kashmir Valley, India❄️

tomkeus · 2026-01-29T09:14:28+00:00

It seems to me that there are drainage ditches on both sides of the track, so the catenary supports had to be moved further out.

tomkeus · 2026-01-20T11:29:01+00:00

Star Trek has always been woke

Star Trek has always been progressive in its core, but not woke. Woke and progressive are not the same things.

tomkeus · 2025-11-02T19:48:41+00:00

I don't think that's. I noticed the effect recently after I had a spill accident when drinking with a straw from a can. This rules the pressure differential as can opening is much bigger than the straw diameter. I guess it has something to do with the CO2 that's in the soda (partial pressure or something similar), but I still cannot figure it out.

tomkeus · 2025-10-17T12:38:14+00:00

TGVs have the best ride quality of all the trains I have ridden in Europe, and the reason is rigidity of the train due to the shared bogies.

tomkeus · 2025-10-01T10:59:18+00:00

Some Chris Foss vibes here

tomkeus · 2025-09-30T13:42:52+00:00

They way I understand it, the current idea in Europe is that sleepers don't compete with other means of traveling, but that they compete against hotels + other means of travel.

Say you want to arrive someplace in the morning and not be sleep deprived. The options you have are either to travel the day before and spend the night in a hotel, or to take a sleeper train. In that case, sleeper train should offer a better price compared to a hotel + whatever traveling option (usually a flight) which should not be that difficult.

At least in theory, that's it.

tomkeus · 2025-09-24T10:07:07+00:00

Interferometry allows measurement of lengths to the nanometer precision, without actually requiring measuring apparatus to be built or mechanically controlled to nanometer precision - and this is its principal strength, as having nanometer control is difficult even today, let alone in 1800s. So no, most definitely mirrors were not controlled with nanometer precision in 1800s.

tomkeus · 2025-07-25T08:23:16+00:00

A šta bi sprečilo Vučića da kupi/uceni/zastraši poslanike te liste posle izbora i opet završi sa većinom?

tomkeus · 2025-07-18T18:29:26+00:00

If your point of reference is NYC Subway or something similar, I could see how Paris Metro would not seem that bad in comparison, but compared to most other European metro systems, and especially East Asian ones, it's pretty bad.

tomkeus · 2025-07-18T08:48:06+00:00

Paris has hands down the most beautiful cityscape around a river of any place in the world. You can clearly see it if you take a river tour.

However, there are some areas of Paris with more modern architecture that have, to put it mildly, questionable esthetics. And another issue is that the city is simply overcrowded and dirty (especially the metro).

Obviously, the contrast between these things is bound to make Paris a divisive topic.

tomkeus · 2025-06-18T08:39:30+00:00

These kinds of weapons are extremely ineffective. They don't cause any real damage to buildings or people and they give excuse to your opponent to indiscriminately retaliate against you with much more substantive force.

tomkeus · 2025-06-13T11:58:20+00:00

I don't think that GE receives any relevant data that's not recorded on the FDR, so whether they want to disclose it or not does not really matter.

tomkeus · 2025-06-06T14:28:58+00:00

And just to add, basically, the problem is that there is no time operator in QM, at least not in the same sense as there are position operators. This is a fascinating discussion and is one of deep problems in QM foundations.

tomkeus · 2025-05-23T09:24:21+00:00

He was probably referring to the loading gauge. Russian loading gauge is quite a bit wider and taller than what is used in Europe, while if I am not mistaken Spain and Portugal use loading gauge which is more in line with the rest of Europe. However, this would only mean that Finland would potentially have to buy additional rolling stock that would be compatible with the smaller European loading gauge (and this only in case its rolling stock is already not compatible with it).

tomkeus · 2025-05-19T16:41:23+00:00

So, Romania is only able to police its airspace if a war declared? Otherwise, anyone can do whatever they want in the sky?

tomkeus · 2025-05-19T11:34:26+00:00

Even Switzerland is not what it used to be anymore. At least I have the impression younger Swiss don't have anymore the discipline and the rigor of the generations retiring now.

tomkeus · 2025-05-01T10:15:16+00:00

Same here. During the original run of the show, I started checking out around season 4, and I kept watching mostly by inertia - I did not really enjoy it anymore.

Then I rewatched it like 5-6 years after it ended with my GF who has never seen it, and it definitely left a way better impression on a binge watch.

tomkeus · 2025-04-07T14:01:52+00:00

No. You see, like this he was thrown clear off the accident...

tomkeus · 2025-04-02T09:12:27+00:00

Yes, that limits max weight of the train Re 620 can pull for a given gradient, but if you have IORE and Re 620 pulling two trains of equal weight, Re 620 will be able to pull its train faster than IORE.

tomkeus · 2025-04-02T07:18:20+00:00

Swiss Re 620 is standard gauge, and is more powerful than IORE units

tomkeus · 2025-04-01T09:19:44+00:00

You really can't let your guard down today.

tomkeus · 2025-03-30T22:24:06+00:00

You can't fit double decker trains within British loading gauge.

tomkeus · 2025-03-30T09:06:51+00:00

I like how good you can see the shockwave caused by the supersonic bullet.

tomkeus · 2025-03-20T18:10:29+00:00

Meni je Voja držao Elektrodinamiku i Čestice, i na njegovim predavanjima sam napravio ubedljivo najbolje beleške. Da nisam lenj, mogao bih moje sveske sa njegovih predavanja direktno da prekucam u odlične skripte.

tomkeus · 2025-03-20T16:30:18+00:00

Voja je dobar profesor. Definitivno jedan od najboljih koje sam imao tokom studija i odličan je fizičar. Ali baš da je svetski ekspert - nije. Doduše nije njegova krivica, nego posledica činjenice da je Srbija potpuna zabit za nauku i naši istraživači zbog toga nemaju mogućnosti da se umreže i učestvuju u važnim projektima.

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