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Old July 10th, 2015, 06:32 PM   #32241
g.spinoza
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Originally Posted by volodaaaa View Post
We don't have to go that far. I might be wrong but point similar to singularity could be even in the middle of Earth.
I'm sorry, but you are wrong
We can calculate pretty well what's inside the center of the Earth, and there is nothing like a singularity. The internal nucleus has a density of ~15 g/cm^3, while a singularity is, by definition, infinite. So the difference between infinite and 15 is still infinite.
The conditions inside the Earth are not even that extreme to call quantum mechanics in. We can perfectly describe Earth using classical "Newtonian" mechanics.

Quote:
And we do not know what would happen if Earth was hollow in the middle and someone fell there. Would he be floating or ripped off?

Of course we know that. Calculations like those were made back in 17th century and are part of Physics 101, every university freshman can do that.
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Old July 10th, 2015, 06:34 PM   #32242
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Of course we know that. Calculations like those were made back in 17th century and are part of Physics 101, every university freshman can do that.
So what will happen?
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Old July 10th, 2015, 06:40 PM   #32243
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So what will happen?
It depends on the mass distribution of the upper crust layers, but if we consider that homogeneous, you will fall initially accelerating like g, progressively reducing the acceleration until you will reach maximum speed and minimum acceleration (zero) at the very center. If we assume no friction due to atmosphere, passing the centre you will reduce your speed because the downward acceleration will begin growing again, until you emerge on the other side of Earth with maximum downward acceleration (g) and minimum speed (zero).

(Of course assuming Earth not-rotating, it will be a bit more complicated if we consider the rotation of Earth)
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Old July 10th, 2015, 09:48 PM   #32244
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New official all-time temperature record for Germany:

5th July 2015: Kitzingen, Lower Franconia (40.3 °C; 104.5 °F)

http://www.dwd.de/bvbw/appmanager/bv...w_klima_umwelt

https://en.wikipedia.org/wiki/List_of_weather_records
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Which new motorways are currently under construction?
Which new motorways will be opened next?

See 'New motorway projects' thread

** Please help completing and updating of the list **

Been/driven: A, AND, B, CDN, CH, CZ, D, DK, E, EST, F, FIN, FL, GB, H, I, L, LV, LT, N, NL, P, PL, RO, S, SLO, USA (My cumulative travel mapping)

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Old July 11th, 2015, 11:35 AM   #32245
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Quote:
Originally Posted by g.spinoza View Post
It depends on the mass distribution of the upper crust layers, but if we consider that homogeneous, you will fall initially accelerating like g, progressively reducing the acceleration until you will reach maximum speed and minimum acceleration (zero) at the very center. If we assume no friction due to atmosphere, passing the centre you will reduce your speed because the downward acceleration will begin growing again, until you emerge on the other side of Earth with maximum downward acceleration (g) and minimum speed (zero).

(Of course assuming Earth not-rotating, it will be a bit more complicated if we consider the rotation of Earth)
There's a good video about it:
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Old July 12th, 2015, 12:37 AM   #32246
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My next journey starting in few days (map).

You can call it tour de almost ex-Yugoslavia Despite immigrants, diplomatic troubles between Serbia - BiH, Unrest in Macedonia and ongoing Greek crisis I can't wait.
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Old July 12th, 2015, 01:29 AM   #32247
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^have fun

venus and jupiter from Trieste (no edit)

048 by hofburgh4, on Flickr
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Old July 12th, 2015, 02:36 PM   #32248
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Just drove a Renault Scenic, it's the first time I've driven anything bigger than my Clio, it was very strange.
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Old July 12th, 2015, 04:11 PM   #32249
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I drove a small Dacia for 10 days. Back in Germany I drove a small Seat. Both cars were brand-new rental cars but there was a huge difference!

Driving 130km/h with the Dacia on the motorway was a bad feeling. The engine was damn loud! It was hard to start moving the car. I usually had to drive slam on throttle. But the car lost so much speed at every little inclination.

The first use of the throttle in the Seat ended with a little shock for me. What a reaction of the engine! Driving >200km/h with the Seat on the motorway was just relaxing and felt quite safe...

In addition, I think I drove a Peugeot for the first time on my way to the airport when starting the trip. It's much better than the damn Renault rental cars I drove years ago. The only worse rental cars where the Dacia and an US Ford Focus in 2007.....
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Which new motorways are currently under construction?
Which new motorways will be opened next?

See 'New motorway projects' thread

** Please help completing and updating of the list **

Been/driven: A, AND, B, CDN, CH, CZ, D, DK, E, EST, F, FIN, FL, GB, H, I, L, LV, LT, N, NL, P, PL, RO, S, SLO, USA (My cumulative travel mapping)

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Old July 12th, 2015, 09:16 PM   #32250
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Dacias are generally loud. I've been thinking of buying me a Duster and the loudness was one of the most serious weaknesses in reviews.
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Old July 12th, 2015, 11:44 PM   #32251
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Quote:
Originally Posted by MichiH View Post
I drove a small Dacia for 10 days. Back in Germany I drove a small Seat. Both cars were brand-new rental cars but there was a huge difference!

Driving 130km/h with the Dacia on the motorway was a bad feeling. The engine was damn loud! It was hard to start moving the car. I usually had to drive slam on throttle. But the car lost so much speed at every little inclination.

The first use of the throttle in the Seat ended with a little shock for me. What a reaction of the engine! Driving >200km/h with the Seat on the motorway was just relaxing and felt quite safe...

In addition, I think I drove a Peugeot for the first time on my way to the airport when starting the trip. It's much better than the damn Renault rental cars I drove years ago. The only worse rental cars where the Dacia and an US Ford Focus in 2007.....
With a Logan you have basicly what Renault has made maybe 15 years ago, poor car in term of materials and building construction, it goes well with his price and his segment (lowcost). Seat is way better, as now it's Volkswagen behind it, it's basicly just cheaper VW cars with a bit of lowcost, but not so much, especially on higher models! (You can ask to Cinxxx what he's thinking of his nice Ibiza! ).
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Old July 13th, 2015, 12:24 AM   #32252
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Hey man, Leon not Ibiza
Logan is very loud, I know because I have driven them a while, horrible on motorway.
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Old July 13th, 2015, 01:41 AM   #32253
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Wow sorry, my bad! I still have in my mind the beautifull photos of your car you posted, and I knew it was a Leon, not a Ibiza (smaller) but it's not what I writed...
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Old July 13th, 2015, 12:41 PM   #32254
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Cars I've driven during the past two weeks:

- Peugeot 2008 Diesel
- Dacia Logan Petrol
- Seat Leon 1.6 Petrol

- Ford Focus 2.0 Diesel
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Which new motorways are currently under construction?
Which new motorways will be opened next?

See 'New motorway projects' thread

** Please help completing and updating of the list **

Been/driven: A, AND, B, CDN, CH, CZ, D, DK, E, EST, F, FIN, FL, GB, H, I, L, LV, LT, N, NL, P, PL, RO, S, SLO, USA (My cumulative travel mapping)

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Old July 13th, 2015, 02:04 PM   #32255
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Dacia may be loud, etc., but even so can be a good choose for people like e.g. my mother. She drives 4-5,000 km a year, the majority of them inside the town she lives in (a town of 14,000 inhabitants). She's 62 years old and does not have a lot of money.
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Old July 13th, 2015, 02:37 PM   #32256
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It can be a great cheap city car.
Of course you can drive it outside too, it's really just a car, nothing else.

But it's no where near for example Renault Clio...
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Old July 13th, 2015, 02:49 PM   #32257
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Once I traveled to Italy (by air) and rented a category C car Diesel (think Peugeot 308). The rental office at Fiumicino airport was out of cars, they offered me instead an Alfa Romeo Giulietta. Quite nice car, I shall say. Very comfortable seats.

In other occasion they were also out of C cat. cars and gave me a Ford C-Max diesel instead. It has a nice driving position and, as others minivans, is spacious (for 4 passengers, not using the extra seat). Felt a bit under powered for climbing the Etna roads, though I think the 2.0 version would do the job nicely.

Reason for such upgrades is that some categories are almost always sold out and they will upgrade you if your flight arrives early enough before they had time to take returned cars and clean them up.

I just wished there were less "gotchas" around the whole rental car business though. I'm a bit paranoid so I take pics and videos of the car before and after, since deductibles are quite high in Italy (€ 2000 for instance).
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Old July 13th, 2015, 03:20 PM   #32258
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Quote:
Originally Posted by Attus View Post
Dacia may be loud, etc., but even so can be a good choose for people like e.g. my mother. She drives 4-5,000 km a year, the majority of them inside the town she lives in (a town of 14,000 inhabitants). She's 62 years old and does not have a lot of money.
Yes, true. For example my grand-parents are driving a Logan (since 2008), for them it's a great little car even if there is some issues with it...

But they are not too demanding because before the Logan, they were still driving a good old Renault 19 from 1992 who was a great car...
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Old July 13th, 2015, 03:42 PM   #32259
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Quote:
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Have to buy a smartphone, I have never had one
Quote:
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Still everybody owns a smartphone
You have bought one meanwhile?
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Which new motorways are currently under construction?
Which new motorways will be opened next?

See 'New motorway projects' thread

** Please help completing and updating of the list **

Been/driven: A, AND, B, CDN, CH, CZ, D, DK, E, EST, F, FIN, FL, GB, H, I, L, LV, LT, N, NL, P, PL, RO, S, SLO, USA (My cumulative travel mapping)
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Old July 13th, 2015, 03:56 PM   #32260
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I will buy one in the upcoming weeks, enough is enough
I'm thinking about the Samsung Galaxy S6 edge, but it costs a lot
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