The Science Thread

[Value Collector]

Don't know about that 95% reliability though. If it's cargo, yea, maybe. Just don't put that on the brochure if that cargo is more than electronics; and maybe contain astronauts.

I'm not sure how you could get a 95% reliability to be honest. How would the engineer work that out?

I mean, are all the parts around 95% or some parts must be 100% while others are 90%, others less important 70% etc.

I know there are tolerances and no need to get it 100% but then how do you fudge the 5% tolerance? Might as well try to get close to 100%.

Kudos to Musk and his team of geniuses... But i'd go with the folks at NASA. Try to get it 100% and the result might reach maybe 95%.

The idea is that simply going for Those last few percentage points of reliability causes you to spend a lot more money with demishing returns, eg adding back up components of the back ups etc.

Off course we are talking about cargo flights, which almost all launches are.

There are reasons to go for reliability sometimes, eg human, and that could be achieved by using the new rockets for humans and older ones for cargo.

But spending an extra $500 Million to reduce the risk of losing a $50million cargo from 1 in 20 to 1 in 1000 doesn’t make sense, unless you are spending the governments money and a spotless carreer is important to you.

 

[Value Collector]

(as the Falcon Heavy veered off over the ocean shortly after launch) .

This video explains why rockets turn and seem to start flying horizontally rather than straight up.

The example of the canon at 25 seconds in explains the principle.

 

[SirRumpole]

Oxford student uses ordinary camera to capture atom in prize-winning photograph

http://www.abc.net.au/news/2018-02-14/atom-photo-taken-with-ordinary-camera/9445288

 

[bellenuit]

Although your eyes might tell you differently, these two photos are exactly the same. For instance, the kerbs should appear parallel if the two photos are identical, but to me they seem at slightly different angles.

 

[Value Collector]

Although your eyes might tell you differently, these two photos are exactly the same. For instance, the kerbs should appear parallel if the two photos are identical, but to me they seem at slightly different angles.

View attachment 86281

Yeah that’s weird

 

[Tisme]

Although your eyes might tell you differently, these two photos are exactly the same. For instance, the kerbs should appear parallel if the two photos are identical, but to me they seem at slightly different angles.

View attachment 86281

An allegory that even an individual will engage in self conflict to prove him/herself right at the expense conciliation.

 

[fiftyeight]

Under Sea cables transport 99% of the global intercontinental Internet Data.






Cutting one open.



Animated map of the global cable network.



Telstra Corporation is one of the big global owners of under sea cables, Owning or partially owning cables all over the world.

Seen these vids the other day somewhere else. Blew me away tbh. Had never thought about it before. Seems like the network is vast enough to with stand attach during hostilities/war...

But I wonder if there are enemy states out there that pre-installed some kind of cutting device on enough cables to shut down a continent/country if provoked???

 

[Country Lad]

Under Sea cables transport 99% of the global intercontinental Internet Data.

Well, there you go - the Cloud is actually underwater. And here I was thinking it was on the servers in Shifty Brothers garage.

 

[Tisme]

 

[Tisme]

Proof I AM the centre of the universe

Turn sound on

 

[SirRumpole]

Proof I AM the centre of the universe

Mind boggling indeed.

 

[SirRumpole]

Our Space Agency is on the way.



http://www.abc.net.au/radionational...ntdown-for-an-australian-space-agency/9579364

--

 

[Gringotts Bank]

Blue and black or gold and white?

Yanny or Laurel?

I toggle between both, but not willfully.

 

[bellenuit]

Blue and black or gold and white?

Yanny or Laurel?

I toggle between both, but not willfully.

You are missing the link, but I am 'Yanny' all the way. I hear nothing that is in the least like 'Laurel'

http://www.bbc.com/news/blogs-trend...l&ns_source=facebook&ocid=socialflow_facebook

 

[cynic]

An interesting discourse on willpower and some common misconceptions:

 

[Sdajii]

An interesting discourse on willpower and some common misconceptions:

Thanks for sharing this, cynic. I think it's some really interesting and valuable information, I really enjoyed it and it does a lot to explain us. A lot of people could benefit greatly from this. I have extreme willpower when I choose to use it, and this has helped me to understand how some people are so lacking in it, and also explained why I have failed in the few times I have. It really resonated with me, thank again!

 

[Value Collector]

Proof I AM the centre of the universe

Turn sound on

I didn't realise there was stars smaller than Jupiter.

It made me wonder why Jupiter has not turned into a star.

 

[Value Collector]

I didn't realise there was stars smaller than Jupiter.

It made me wonder why Jupiter has not turned into a star.

So I just looked it up,

Turns out Jupiter would need to be about 80 times its current mass before it turned into a star, however at that mass it would actually be smaller in diameter due to the increased gravity making it more dense.

So yeah, Stars are much heavier than Jupiter, however the smaller stars may look slightly smaller than Jupiter even though they have a lot more mass due to them having more gravity.

 

[SirRumpole]

So I just looked it up,

Turns out Jupiter would need to be about 80 times its current mass before it turned into a star, however at that mass it would actually be smaller in diameter due to the increased gravity making it more dense.

So yeah, Stars are much heavier than Jupiter, however the smaller stars may look slightly smaller than Jupiter even though they have a lot more mass due to them having more gravity.

Neutron stars are about the size of a city with a mass 1.5 times the sun.

Mind boggling to contemplate.

 

[Tisme]

The centre of the milky way is Sagittarius so best view is 30deg south ...good excuse to visit Coffs Harbour