Endy0816

1 minute ago, sethoflagos said:

That would be Revision 2, the CO2 version,

I mean water will also sublimate on Mars at Martian atmospheric pressure, depending on temperature.

What is the plan for sublimation?

17 minutes ago, RichardReMark said:

Yes Endy this is what i also had forgotten to put in the video. But i have put it in the video desciption.

The hands touch the snake or "filament" in 1 hyroglyp and then compaired to the second the hands touch the "bulb"

In between the hands of both hyroglyp's there is nothing meaning: the invisible Radon gass in my theory.

 

And it is a verry strange lotus flower considering that they carved it in one of the most hardest rocks (granite) and when they can make beautiful granite body statues with perfect symetrical faces. 🙃

Drawn from the side like the people are.

2 hours ago, exchemist said:

Some of these "Mysteries-of-the-Ancients", von Daniken loonies insist they are Crookes tubes!

We're a very suggestble species...

Does puzzle me what exactly the snake is supposed to be in that case though.

Egyptologists found that is actually a depiction of a lotus flower with a snake.

Easier to see in this picture of them.

Flower towards the base and heads of the snakes.

-snip-

3 hours ago, Sensei said:

Really deep diving requires special procedures and special equipment i.e. decompression chamber otherwise diver will have decompression sickness which might even end up with death. You should read entire articles:

https://en.m.wikipedia.org/wiki/Decompression_sickness

https://en.m.wikipedia.org/wiki/Diving_chamber

Hydrostatic pressure at sea level is 1 atm. 

Approximately 2 atm at depth 10m.

Approximately 3 atm at depth 20m.

and so on, so on, every 10m.

Whether diver will survive getting out of submarine which sunk depends on depth at which he/she get out of it and availability of decompression chamber waiting for them..

Technically also depends on how long you spend at that pressure/depth.

600 feet(183 meters) is supposed to be survivable though have to get back to atmospheric pressure fast.

Ironic problem of having too much air in you, when escaping not having enough air.  Better off really waiting for the Rescue Sub in almost every case.

6 hours ago, IDNeon said:

Not silly.

I'm having trouble figuring out if a diver needs to experience a compression time when exiting a pressure hull or if once the chamber is flooded they are good to go.

Essentially I'm trying to figure out if a chamber must be first pressurized by gas to equalize ambient pressure outside pressure hull or can that stage be disregarded as it is for a torpedo.

A torpedo isn't sensitive to forces in the same way a gas filled meat-sack is.

So...I can't assume that what works for a torpedo tube works for a diver.

But it makes sense that it would work except a bit of discomfort when the water pressure goes from 1atm to ambient pressure at depth.

So can you suggest which method must be followed to exit a pressure hull? 

Slow compression with gas then flood tube? Or just flood tube as only step?

In exiting out a submarine's escape trunk, for example, you only need to flood the trunk.

Forbes had a good article about it that may be of interest. Explains everything in good detail.

https://www.forbes.com/sites/davidhambling/2021/04/26/how-to-escape-from-a-submarine-stranded-on-the-sea-bed/?sh=231aa94f1227

TVR Exploring? Wish I knew the answer to your question but it is interesting the stuff they find down there.

Do wonder if they ever take samples off camera.

10 hours ago, dimreepr said:

Only in the sense of a lottery ticket...

I think nsurance will likely still exist, but will be handled by the rental/delivery company instead.

If the overall accident rate goes down it won't be as big of a burden.

4 hours ago, studiot said:

Thank you all who responded.

I do not think it is just a question of risk.

A question of acceptable risk maybe , but not absolute risk.

There was a case a few years a go where a badly designed rear wheel bearing caused some rear wheels to fall off above (i think it was) 35 mph.

There were a few resultant deaths, although many rear wheels did not detach.

No one considered even one single death an acceptable risk. It just should not have happened.

The manufacturer called in all the affected cars for urgent modification.

 

Tesla in this case could have designed the car to be inoperable without someone properly in the driver's seat.

I think it is BMW that has such a system if all passengers are not wearing their seat belts.

Bypass devices exist for those as well.

I do agree Musk rushed things in a unsafe manner. Shouldn't have been even suggested them as being self-driving until our pleasure-seeking selves could be safely out of the picture.

Personal vehicle ownership is likely to go away IMO, so insurance issue will solve itself.

Everything I've read suggests the mining waste would only be marginally radioactive, so I'm more concerned about the phosphate than radioactivity. We already have frequent algae bloom problems. Biscayne Bay National Park is right there too.

Could possibly end up something like Venus too. With a day length about 117 times ours, it still maintains about the same temperature planet wide.

I was thinking most of the ecology could be airborne, with low lying or anchored surface and underground species providing mineral resources.

I think meant that their voyage was one of exploring and defining human and Federation values.

Do you immediately assume hostile intent in a conflict if unable to communicate? Should you obey a law no matter the circumstances? Is noninterference always appropriate?

Remo Williams

Dog vs Cat 

Do love my cat but have loved having dogs in the past.

Lot tougher but cats can be trained to a degree. Provided she's not otherwise engaged, she will come when called and is trained to stay in the yard. Additionally she'll help out with any pests that want to freeload.

2 hours ago, studiot said:

Thank you for the reply.

The test you refer to didn't mention the environmental conditions and I couldn't see any snow in the picture but I assume the ambient temp was below 70^oF.

One thing about an IC engine is that it heats the engine gompartment and fabric of the vehicle as well.

In countries like the UK internal condensation and corrosion is a problem in vehicles parked outside.
This requires heat as well as ventilation to combat.

Yeah, I don't know the exact conditions he ran the test under, thought it good to provide some numbers though.

Could you run a dehumidifier? Not sure what vehicles use in the way of corrosion inhibitors or other protective measures.

Anyways I'm still waiting for more data on EV lifespans myself, before making the switch. Mainly concerned about the batteries. Charging has become a bit more practical at least.

2 hours ago, timo said:

I helped my colleagues to move a Volkswagen E-Up for ~50 km between two cities about eight years ago - highway in one direction, smaller roads in the other. The car was used in a field test in the city I lived in, so it made sense for me to just go from/to work by car instead of by train. I drove on a cold but typical German winter day. Turning on the heating approximately halved the remaining range, and I ended up turning heating on and off periodically during the trip. I found that experience quite impressive back then, because I was not aware of such basic issues as heating before. I imagine that there is room for improvement when it comes to thermal insulation, and that newer cars perform better (the E-Up is an electric variant of a combustion engine design, so heating may not have been a big issue in the design). But that's speculation.

The waste heat we're all used to having has left us spoiled lol.

2 hours ago, studiot said:

We have a thread on comparing electric to heat engine powered vehicles, but this and a recent discussion elsewhere inspired me to consider passenger cabin heating in electric vehicles.

IC engines have the advantage of a readily available heat source.

Does anyone have any data or experience of how an electric car is heated and how much energy this takes ?

Looks like commonly a mix of heat pumps and resistive heating.

https://www.nissan-global.com/EN/TECHNOLOGY/OVERVIEW/heat_pump_cabin_heater.html

Quote

Now the first batch of new 2021 Tesla Model 3 vehicles have been delivered, and YouTuber Bjorn Nyland did a comparison test with his 2019 Tesla Model 3, which doesn’t have a heat pump:

He let the heat run in both cars for several hours at 21C (70F) to see how much of a difference the heat pump made.

Based on his test, he concluded his 2019 Model 3 without the heat pump required 2,170 watts to maintain the temperature. The new 2021 Model 3, on the other hand, needed only 735 watts.

https://electrek.co/2020/12/03/tesla-model-3-heat-pump-comparison-results/

I suggest picking the programming language you're most comfortable with and then determining the type of application you want to make.  A simple practical use application will tend to be easier to develop IMO.

For the next part you'll want to imagine an attacker or a user randomly sending inputs; and attempt to defend against all undesirable outcomes that might result.

You might want to for instance allow the user to enter a password as a security feature, but that entered information will then require input validation.

I think you might have division by zero going on.

Yeah, I think they're being pushed more to curb UK's imports, but have been decently successful by the looks of things. May or may not be cheaper for consumer, though also have to factor in environmental concerns.

Would definitely look into what Danijel mentioned.

Is it possible to directly buy the fuel you need for your cooking needs and reduce your bill that way some? Reading that some can also opt of the standing charge in exchange for paying more for what they do use. Might be an option as well.

Is rigging up a siphon an option?

1 hour ago, iNow said:

Unfortunately, scenarios like GameStop hitting $483/share on Jan 28 (making it briefly the single largest company on the Russell 2000 Index) suggest a flaw in this core argument regarding the market being reflective of inherent value.

IMO it’s much more reflective of human psychology in large groups. What these large groups choose to value on any given day is quite volatile and need not be girded by underlying infrastructure or resources. 

Yeah, it is more perceived value though invisible hand will make any flawed perception obvious eventually.

Granted in the Gamestop thing there was also the short sale going on. Perceived value was impacted by the knowledge that the short sellers would need to buy back the shares they were shorting.

4 hours ago, MigL said:

That is the problem with cryptocurrencies, and the stock market in general.
They are not based on anything of actual, inherent value, but a 'confidence' that they are somehow valuable.
Elon Musk buys some verson of bitcoin for his son ( whatever his name is ) and that currency jumps in value because of E Musk's popularity/celebrity status.
A bunch of kids push the failing stock of a gaming company on Reddit, and its stock goes up two orders of magnitude.

Lot of the big hedge funds were attempting to short the stock and someone figured it out. Wouldn't have worked normally.

4 hours ago, MigL said:

I have a big problem with any currency that started out 30 odd years ago, by being 'mined' on computers with fast video cards.

How exactly does that bestow a value to something ?

Mining helps to log/verify transactions in a ledger(in addition to receiving a possible reward). Really the ledger, or blockchain, that underlies bitcoin's value. Creates artificial scarcity if you want to think of it that way.

Comes from the Nitrogen mainly.

Quote

Deexcitation of nitrogen

The excited nitrogen deexcites primarily by emission of a photon, with emission lines in ultraviolet, visible, and infrared band:

N₂^* → N₂ + hν

The blue light observed is produced primarily by this process.^[1] The spectrum is dominated by lines of single-ionized nitrogen, with presence of neutral nitrogen lines.

https://en.m.wikipedia.org/wiki/Ionized-air_glow

You have an... interesting.. idea of 'fun' lol. Kills me visiting relatives up North during the winter.