₦airaland Forum

Freemanan:
Great Mate

RobinHez:
1. The fluttering flag

kodeya:
My field is chemistry. Though I just finished my first degree in it.
My flair is space technology. I recently saw this movie, interstellar, and there were some things I didn't really understand in it.

Like the relation of time and speed. Something called time dilation. Two astronauts went to a planet closer to the blackhole and when they returned, they discovered that they had gone for 23 years whereas they only spent few hours on the planet. I don't know how possible is this. Pls I need a layman explanation on this.

Ese gann o

I promised I would explain it.
And here I am.

Time dilation is one of the phenomena observed in relativistic physics developed by Henri poincare and Albert Einstein. So, far, it cannot be explained to a layman. I can only describe it to you.

You see, time and space are fused together. As in, they are part of each other. And as such, what ever you do to space MUST affect time. You cannot move in space without moving in time! And you cannot move in time without moving in space . . . or can you?

There is a postulate of special relativity that states that the faster you move, the slower time passes for you . . . to external observers. Now, that is kind of annoying. Because, what I mean by external observers is, even if you were to move at the speed of of light, you wouldn't know it unless you saw something that wasn't. It is called "inertial frame" I believe.
But, I digress. As I was saying, it is simply observed that the faster you move RELATIVE to something, the slower time runs for you. Therefore, if you were to get on a bike and ride at 300km/h, you would age . . . roughly about 0.000009 times less than your friend that stayed at home.

Now, there is also another point here. Which I believe is what happened in interstellar. I didn't watch the movie though.

Gravity bends space. or more accurately, mass bends space. And where there is mass, gravity must be there.
So, we know that space and time is fused, and I said earlier, if you affect space, you affect time. This means by curving space, you are also curving time. Which means instead of it to run equally in all places, it runs slower where you are. Faster where you are not.
Now, imagine if you are a little child. The space you bend is almost insignificant. Same if you were an adult. so, your time runs fast still.

But imagine you were a giant planet!

Time would run about 6000 nano seconds slower for you! And of course, every one that lived on you.

But wait . . . . what if you were a black hole? If your mass was HUMONGOUS!

Time would run so slow for you that we could probably measure it in years.

And that is all about what happened in interstellar.
1. The faster you move in space, the slower you move in time.
2. The heavier you are, the more you bend space.
3. The more you bend space, the more you slow time.

But, neither you, nor anybody else, knows what is going on. Because your clocks will continue to run perfectly, and light will move normally, unless, you were to observe each other. Or you were to leave the black hole and and go to earth. You will suddenly discover that time ran faster for them. While it didn't for you. Despite the fact that it was normal-looking for both of you.

Cheers!

johnydon22:
[b] I sure was expecting this to be the first, now let us go on it.
The conspiracy theorist suggest that the moon has no atmosphere therefore the flag shouldnt move. . they speculate it either the footage was shot in a secluded desert or in a studio. .
we will take it one after the other. . .

1)Desert theory: If the footages were taken in a desert, we know the sand particles in a desert are relatively small and dusty. . . A gush of wind on a desert capable of fluttering a flag that low to the ground sure must move dust particles. . then why are they no dust particles moving, why is only the flag moving? A gush of wind capable of moving a flag couldnt move dust? i think not.

2) The studio theory: some theorist assert the photos were shot in a simulating studio. . Let us examine how plausible this should be. .

a studio enclosed for this purpose sure must have been indoor. . and we all know flags dont flutter inside our houses unless we leave the doors open and a flush of wind rushes in, or we leave the fan on, it would take a high speed fan on a close range to make a fan flutter in a room or studio, remember studios are more enclosed without large windows, just necessary doors.

So NASA bearing in mind that the moon had no atmosphere, did you think they would purposely leave the fan ON and place it at close range at the flag? or maybe they left the doors open for winds powerful enough to flutter a flag to rush in?

If you watch the pic you posted closely, you would see that the upper side of the flag is held up by a horizontal metal stick thats why its straight so as to maintain an uptight flag in the low gravity moon environment, that is the only way to spread a flag in a non-atmospheric environment.
If you watch the footage you would see the flag started fluttering, more like starting moving after the astronauts touched it while sticking the metal rod into the ground.
https://www.wallpapermaven.com/i/space/7/Moon-Flag-d.jpg see Armstrong pulling down the flag horizontal bar?

Nasa's reply to the movement of the flag was: They twisted the pole into the Lunar
dust and in doing so they caused the flag to 'wobble'. Since there is no atmospheric
friction on the moon, and since there is a low gravitational field, the wobble of the flag
persisted for much longer than it would on Earth. It appears as if it is blowing in the wind
but in reality it has retained movement momentum from the action of twisting it into the
ground.

This is similar when you shake an X-ray photo in your room, it wobbles. . that was the effect the shakes (while installing the flag) had on it and remember the low gravity and atmospheric friction of the moon makes the momentum more enduring than it would on earth... Or were they expecting a flag to be crisp like an iron sheet when obviously someone touched it?

picture of a the settled flag, notice it still has creases.
[img]http://www.propagation.gatech.edu/ECE6390/project/Fall2009/Rafalco/LunarBreadCrumbs/images/Flag%20on%20moon.jpg[/img]

Note again that Lunar Reconnaissance Orbiter, a satellite launched to orbit the moon has taken images of the land sites of the 9 achieved manned moon missions. . You can see pictures here https://en.m.wikipedia.org/wiki/Lunar_Reconnaissance_Orbiter

Point out more loops bro [/b]

Teempakguy:
hahaha You never fail to disappoint,

Teempakguy:
yes, but not so such a large extent as he described. One cannot write the entire DNA and make his child smarter just by 'acting smart'
right?

johnydon22:
Let me try and tender my own opinions on this.
I think it can be possible since we know evolution is a slow and steady process but am not sure the average height will be up to 10feet, probably 6'8 or there about.
The intellectual capability of man has improved drastically these last few thousands of years and is expected to improve more drastically during the course of our evolutionary journey. . even other animals are getting smarter.. am sure in the nearest future we would have minds that will dwarf Einstein's with a wide margin but am sure not everyone could be that smart they must be impairment in some due to maybe slower genetic mutation.

This is the first time I'm quoting like this. Seems elaborate.
Actually, I think we can surpass that height. In fact, we can surpass seven foot. The height at which the young's modulus of the human bones fail to provide proper support starts at about eight feet.
Two hundred thousand years ago . . . The smartest person in the world was probably the one who discovered fire. He must have felt really proud of himself.
Given enough time, I believe our offsprings can come to think of us as extremely primitive and really dumb. My reason being natural evolution and the fact that science is now trying ti merge man with machine. So, in the future, a child would have a brain, hooked up to a complex super computer that would solve all his problems and upload the answers to his brain., it is possible, is it not?

I don't buy the 150 restriction there is no restriction by anything that determines the number of years humans should live. . its a biological phenomena to which every biological organism has its life span expectancy. . Many modern humans have exceeded this 150years life span like Algerian: Mubarak Rahmani Messe (1873- 2014) i also think then life spans of humans will improve in the near future like you postulated.
Its also ok to note that a Russian Billionaire is funding research on ways man can achieve immortality. . .Uuuhm fingers crossed, wouldn't like to live forever tho

what? He lived that long?
Well, I wouldn't want to live forever either. But I would like to live very long, just to see new tech and stuff. I know the Russian guy. He should be quick abeg.

Sprinting ability in animals develop due to need for survival basically hunting, humans now are one of the animals that do not depend on basic hunting for survival, we are among the organisms that don't necessarily need to run for food but we are the only organisms to just run for fun (sports) so i doubt if our sprinting abilities will improve. . ancient homo sapiens are known to have ran longer distance which has decreased now due to the reduction in our dependency on this ability and more mechanized means of transportation which we expect to improve , so i postulate our running ability will decrease rather than improve with time.

here too, I was referring to binding man and machine. With exoskeletons and/or implants. I do believe we can do it.

Looks will improve all right but this will be on a more distributed basis so am sure humans has gone pass that stage of killing or fighting to get a mate. . so this improvement in looks and features will be a general improvement

I agree with this,

They can get to a stage where may be classified to be very different to what we are now but this may take millions of years to get to that drastic stage of evolutionary trend... If humans don't stop and have a rethink about what we are doing to this planet we live in, our species and many others wouldn't survive that long

Evolution is a slow process or at least with what we think we know, so its likely to take a duration of millions of years. . . And yes accelerating this can be possible through Genetic engineering

We can only try small na

Abi nah
I can see kingtom up there somewhere . . . baba, I hail oh,


Cheers!

NDprudent:
Yeah!! D chances are so little.
I admire ur diversity in science.
What field re u in, precisely?

RobinHez:
2. There where no stars in any of the footage
@johnydon22

Teempakguy:
This is the first time I'm quoting like this. Seems elaborate.
Actually, I think we can surpass that height. In fact, we can surpass seven foot. The height at which the young's modulus of the human bones fail to provide proper support starts at about eight feet.
Two hundred thousand years ago . . . The smartest person in the world was probably the one who discovered fire. He must have felt really proud of himself.
Given enough time, I believe our offsprings can come to think of us as extremely primitive and really dumb. My reason being natural evolution and the fact that science is now trying ti merge man with machine. So, in the future, a child would have a brain, hooked up to a complex super computer that would solve all his problems and upload the answers to his brain., it is possible, is it not?

what? He lived that long?
Well, I wouldn't want to live forever either. But I would like to live very long, just to see new tech and stuff. I know the Russian guy. He should be quick abeg.

Hehehehe am not sure if this can be done, life and death negates each other and are dependent for meaning, without death how do we recognize life. . . and again population control will be history, over population and shortage of food and other materials we would probably then need to move some people to other planets.

here too, I was referring to binding man and machine. With exoskeletons and/or implants. I do believe we can do it.

With this then it is no longer a biological evolution

I agree with this,

Of course. In fact, in future, they may be able to make sounds our current vocal system cannot make. And yes, we need to think about the planet. Although, we might eventually colonize other planets. I think the movie, star wars is a very accurate depiction of how the future is moist likely to be. Have you watched it?

exactly what I had in mind. Genetic engineering. Also, prosthetics.

Abi nah
I can see kingtom up there somewhere . . . baba, I hail oh,


Cheers!

Hahahahaha

Teempakguy:
computer science.
Can you believe it? My amebo is too much.

RobinHez:
wow! johnydon22 e be like say u don dey rehearse since for my questions, anyways good one.

3. Who filmed Neil Armstrong stepping onto the Moon?

This is a funny question by the theorists. .

If you watch the real video of the moon landing here
https://www.youtube.com/watch?v=RMINSD7MmT4&feature=youtube_gdata_player, you will see that the camera that filmed Armstrong was at the side and close. . .

who was supposed to ask that question knowing Apollo16 had cameras on it... THE VIDEO OF ARMSTRONG CLIMBING DOWN WAS TAKEN BY A CAMERA SITUATED AT THE SIDE OF THE CRAFT APOLLO 16
Leme post a picture of the real footage of armstrong climbing down the ladder and also the apollo 16 space craft..

RobinHez:
Johnydon22 do u have a blog?

johnydon22:
Nope

RobinHez:
This guy is good at what he knows...i'm jealous o!!

4. whats up with the rock labeled "C"?

RobinHez:
aw...it would have been nice if u made astronomical publications as a Nigerian so make dem nw say we sef sabi

NASA may even discover u sef

johnydon22:
Uuuhm this is the first time am seeing this, take a long look at the picture. . i speculate the C on that piece of rock is faked. . .

johnydon22:
Lol and who would read such scientific publications. . . Nigerians sadly even our youths would rather read the bible and keep on dreaming about raptures and paying tithe

RobinHez:
it aint faked...Nasa acknowledged it, but tryed diff. explanations...

RobinHez:
I would....nd i'm sure some others too even the oyibo peeps will also...(my blog is a testimony to that)

Ok i will see to that then but just for the record am not a phone guru, dont really know how open a blog

ermmm...i wouldnt like to bring religion into this thread.
but just understand that the spiritual controls the physical...

Lol. .just to be fair, define spiritual. . . so we can grasp the exact notion you take it to imply

can u come and share some ideas here for me https://www.nairaland.com/2367714/why-dont-buy-alien-story

Teempakguy:
computer science.
Can you believe it? My amebo is too much.

johnkay1:
why is diabetes, prostate cancer and Brest cancer seems to be the order of the day in this our generation? is it because of this gene mutation of a thing?

Teempakguy:
I promised I would explain it.
And here I am.

Time dilation is one of the phenomena observed in relativistic physics developed by Henri poincare and Albert Einstein. So, far, it cannot be explained to a layman. I can only describe it to you.

You see, time and space are fused together. As in, they are part of each other. And as such, what ever you do to space MUST affect time. You cannot move in space without moving in time! And you cannot move in time without moving in space . . . or can you?

There is a postulate of special relativity that states that the faster you move, the slower time passes for you . . . to external observers. Now, that is kind of annoying. Because, what I mean by external observers is, even if you were to move at the speed of of light, you wouldn't know it unless you saw something that wasn't. It is called "inertial frame" I believe.
But, I digress. As I was saying, it is simply observed that the faster you move RELATIVE to something, the slower time runs for you. Therefore, if you were to get on a bike and ride at 300km/h, you would age . . . roughly about 0.000009 times less than your friend that stayed at home.

Now, there is also another point here. Which I believe is what happened in interstellar. I didn't watch the movie though.

Gravity bends space. or more accurately, mass bends space. And where there is mass, gravity must be there.
So, we know that space and time is fused, and I said earlier, if you affect space, you affect time. This means by curving space, you are also curving time. Which means instead of it to run equally in all places, it runs slower where you are. Faster where you are not.
Now, imagine if you are a little child. The space you bend is almost insignificant. Same if you were an adult. so, your time runs fast still.

But imagine you were a giant planet!

Time would run about 6000 nano seconds slower for you! And of course, every one that lived on you.

But wait . . . . what if you were a black hole? If your mass was HUMONGOUS!

Time would run so slow for you that we could probably measure it in years.

And that is all about what happened in interstellar.
1. The faster you move in space, the slower you move in time.
2. The heavier you are, the more you bend space.
3. The more you bend space, the more you slow time.

But, neither you, nor anybody else, knows what is going on. Because your clocks will continue to run perfectly, and light will move normally, unless, you were to observe each other. Or you were to leave the black hole and and go to earth. You will suddenly discover that time ran faster for them. While it didn't for you. Despite the fact that it was normal-looking for both of you.

Cheers!

Geofavor:
Good afternoon guys. I hail all the gurus in da house.

Pls help me solve this,

if 1atm = 760mmhg = 101325N/m^2

then 1mmhg = XN/m^2

what is X?