/sci/ - Science & Math

A straight line is the arc of a circle with a radius of infinity.

The sample sizes needed would probably be quite difficult to keep uncontaminated for the duration of the experiment.

Scaled down simpler versions of such an experiment have bin attempted and where successful in creating the organics necessary for life.

Basically give me a few billion $ and a few hundred years and we could probably do it. Current sample size simply isn't large enough.

>>6337204
I would not say he lost it so much as he was too polite. He made good pointers right away with tree rings, ice cores etc that make it immediately obvious young earth theorie ls are full of crap.

However he did not dance on these facts and he did not go for the kill in pointing out that Ham's faith in an old book telling the past , as opposed to all of science, is no more corroborated with empirical evidence from our modern scientific world than any other work of fiction. One of the audience questions asked Ham if he takes everything in the bible literally word for word, and Ham reveals he picks and chooses what he wants. Bill barely seized this huge flaw although he did mention "if you think some of the bible is poetic then what makes you so sure the first couple of passages in genesis are facts?" ... This sounds like he got him good but the way he delivered it was weak and not accusatory at all, he is too gentle dealung with a doofus who stood there co.tradicting himself the whole time and just letting him attempt to poke holes in science. Dawkins would have torn Ham a new assole, Nye is too nice to really put him in his place to make it obvious he wonel even though he did on some key things (ham had no response at all to tree rings, no evidence of migrations of post ark animals etc and had an embarrasingly weak answer to ice cores.. again bill did not press him on these hard facts though, only a bit on cores while trying to lecture the audience about how great science is).

There is absolutely nothing to this? It complies a lot with the quantum theory. Are you simply saying no because your dismissing it as a nut-job video or because of the science?

>each element of the empty set says that you're a faggot

>the fundamental group of your brain is nontrivial

>i need AC to point out how many shit you say

>your mind, as subset of R3, is compact

>fuck of, structure preserving mapping

>are you by chance one part of the solution of the wave equation?

>the function of your mothers mass over time is not L1

>im gonna switch to non-standard analysis to describe your penis size

>as group, you only have 2 normal subgroups

>your mother lands surjectively in her bed

Radio siginals are indestingquisable from background noise at a little over a light year. The nearest star to us is around 4 light years. Interstellar communication is done with high powered inferred lasers. The signal is so focused you would never pick it up accidentally.

>>5679058
Profit has no meaning to a communist civilization and communism is almost essential to the low resource/close quarters environment space travel imply.
As far as technology goes if a civilization has a actual need to go to space they will. We could of had interstellar space travel in the 60s if there was a actual reason to sink those kind of resources into it.

>>5678932
First contact if we didn't initiate it will probably be from a probe. The main bus would most likely about the size of the statue of liberty with multiple SUV sized landers. (after the detachment of the deceleration stage)
Such a think would be impossible to hide as it would show up like a torch against the background of space while decelerating. The main cruise stage (which would detach before entering the solar system and the firing of the deceleration stage).

By the time said probe arrives from its origin it would probably be hundreds if not thousands of years old. Anny signals it sends would take years to reach those who sent it and it would probably take many more years to get any kind of back and forth communication going.

>>5678965
We literally have nothing worth taking. Resources of anything are not exactly scarce.

If you were to go about the advent of clinical immortality, how would you? We already have brain transplants. We need to come up with a way to prevent the brain from deteriorating, from losing necessary information over time, but without stunting growth.

Could it be possible in some form or fashion to perform multiple surgeries that could replace regular brain matter with regenerative cells similar to that of that fucked up immortal jellyfish?

On an even more difficult note, do you believe its possibly to transfer the human conscience outside of a brain transplant? I imagine it would be possible to somehow transfer or store a person's general knowledge and memories, but what about their conscience? For example, you made a clone of someone that even replicated their brain down to memory level. The clone would however has its own conscience. Could you somehow bring said original body's conscience to it?

>>5422976
EVERYONE IN THIS THREAD IS RETARDED

There is no paradox.
Radio signals degrade into background noise within a lightyear.
FTL is preposterous and requires to much energy.
Interstellar communication is done with nuclear pumped inferred lasers which are far to focused to picked up accidentally. Also the universe is fucking huge.
The only reason a species would have for leaving its own solar system is desperation.

Magnetic field is not a major obstacle. A replenished atmosphere would be enough to block most of the radiation.

A probe to our planet from a planet 100 light years away would need to be fucking huge. There would be no way of hiding it. We would see it shining like a torch as it decelerates into the solar system.

Now one this bus sized probe (not including ejected propulsion systems) parks itself into orbit it would be visible with commercially available telescopes. Anny of the small landers would be intercepted upon arrival.

The lander would most likely maintain radio communication with the main craft which would then use a nuclear pumped inferred laser to send data to one of the substations it dropped on the way here.

So basically if aliens came here we would fucking know about it.

>humans spend decades and decades researching and developing a ‘practical’ system of space travel
We already have one. It just requires spaceports to build.
>basically a rocket ship that will travel at sub-lightspeed
well duh
>astronauts get on the rocket ship in preparation for a journey to Alpha Centauri
mmmkay
>the goal is to colonize one of the planets orbiting that star
Would be cool if they found some planets worth going to first.
>their ship will take 300 years to get there
would only take 50 to 70 years
>multiple generations will be born on the ship; no hypersleep technology exists
not necessary
>they find that the planet is already colonized by humans by the time they arrive
Unlikely
>while the original mission was still on its way to the planet, FTL travel, space-folding fuckery and other relativistic bullshit is developed
nope.avi
>other astronaut missions leave Earth and arrive at Alpha Centauri having only traveled for 5 years
If they could travel faster then light it wouldn't take 5 years to travel to Alpha Centauri.
>rustling everywhere
MUH JIMMIES

>>5279031
>>5279044
^retards

We dont see sighns of life everywhere because we dont yet have the ability to directly see earth sized planets around other stars in there habitable zone.

If you are talking about radio signals those degrade to background static in a little over a light year. Interstellar communication is done with inferred lasers which is not something you are going to pick up accidentally.

There is no paradox. Radio signals degrade to static in a little over a light year and the only way to communicate over those distances is with nuclear pumped inferred lasers which isn't a signal you are going to pick up accidentally.

Faster then light travel is practically impossible and slower then light travel takes fucking forever. As far as finding inhabitable planets goes we do not yet have the ability to detect earth sized planets around sun sized stars within there habitable zone. We barely managed to detect one that was closer then Mercury to its star around our nearest neighbor and that took YEARS.

TLDR: Things in space are slow. Finding signals isn't as easy as it is on TV.

>>5222597
I dont expect us ever to leave our galaxy. There is not enough dust in the intergalactic medium for a Bussard to work properly and the fuel required otherwise would be enormous. The constant expansion of the universe has no effect on the lifespan of the local group (which will most likely eventually merge into one super galaxy). All we have to worry about is somehow using all the dust in our area which will last a very very very long time. After which we all freeze to death. One possible way to increase the lifespan of the "human" race would be to use a methane based cryo biology to recreate "humans". It is far cheaper to keep things at −179 °C the it is to keep them at 20 °C.

>>5107809
I have already taken that into account jackass. This wouldn't even be possible using chemical rockets. Do you know how much of Ceres's mass would be blown off and converted to fuel just moving the fucker? At least 2/5 of it. The object is FAR to large for solar sails to be doable.
>>5107858
That will use most of the objects mass to move it.

>>5108038

>You need to fire some asteroids at Mars.
No you don't.
>There's not enough stuff there to make a decent atmosphere
Yes there is
> (and no, you don't need a magnetic field, retards. Look at Venus).
This is correct.
>The most simple and cost-effective way is dislodge some asteroids from the main belt, and maybe the Jovian Trojans.
This is also correct but not for there contents. You need them for the impacts to cause outgassing.
>How you do is by constructing a robotic spacecraft, that is essentially a huge Ion Thruster. First, it flies to some asteroid, attaches itself to it, and by using Solar Panels to produce energy, and using material from the asteroid to power the Ion Thrusters. It doesn't matter that it'll probably take decades to steer an asteroid towards Mars that way, the fuel and energy is infinite.
Fuel and energy are not infinite. A good portion of the object mass will be converted into fuel. The aforementioned spacecraft would be a burnt out husk by the time it reached its destination and would not be reusable without significant rebuilding.

Mars lost its atmosphere to the INTENSE early solar winds. Anny new atmosphere would have no problem staying on the planet and would last for billions of years unmaintained. Atmospheric sputter is not a issue.

People who makes these stupid threads should be banned.

I have a couple of questions for you math pros out there.
Is it possible to 1+1 = 11?
I first thought about using numeral system 1, but it confused me so I thought about numeral system 2, 1+1 in numeral system 2 would be 10, right?
I thought more about numeral system 1 tho, thinking that numeral system 10 has 10 numbers, 0-9, that would mean the numeral system 1 has only 1 number, 0.
Which leads me to, how does the numeral system 1 work? Does it at all?

>>4993214
>uhhhh
HURRRR
>Mars doesn't have enough surface gravity to hold an indefinite atmosphere. It bleeds off too fast into space. Go take basic astronomy.
Stop watching popsci BS. Mar's atmosphere was striped by a combination of very large impactors and the extremely volatile early solar winds.
>Even if you did, the planet's core is too cool to maintain geothermic processes (outgassing, ocean currents, etc.) They're all tied to the core and how hot it is.
False
The only reason we have plate tectonics is because of our surface water. Mars is still liquid hot on the inside. The weight of its own uneven crust (caused by the large impactors mentioned earlier) prevents a magnetic field from forming.

LRN 2 GEOLOGY

Also, good luck "terraforming." We're never going to reach that state of technology.

What is time?

>The Big Bang created the universe
No it didn't.
>Quantum fluctuation causes something to come from nothing
>Big Bang causes that something to expand really really fast
>We get the universe
You're making this universe thing too complicated. Grandfather paradox? What?

No. The universe is not orderly and is simply a roll of a infinite number of dice. The total energy of the universe is 0. The universe is a very complicated arrangement of nothing.

But what if there are 10 plants in the field?

/sci/ please help me!!!
Consider the case where an object is rotating in a uniform circle of radius 2.0 at a rate of 25.0 revolutions in 30 seconds.
(a) What is the period of motion of the object?

(b) Determine the velocity and the acceleration of the object in the circular path.
And:

What centripetal force is needed to keep a 3 kg mass moving in a circle of radius 0.5m at a speed of 8m/s?