generic image
Processing...
  • Games
  • Catalog
  • Develop
  • Robux
  • Search in Players
  • Search in Games
  • Search in Catalog
  • Search in Groups
  • Search in Library
  • Log In
  • Sign Up
  • Games
  • Catalog
  • Develop
  • Robux
   
ROBLOX Forum » Club Houses » Off Topic
Home Search
 

Re: I can prove the Big Bang with 7th grade math.

Previous Thread :: Next Thread 
CuteBabyLIama is not online. CuteBabyLIama
Joined: 17 Apr 2015
Total Posts: 389
25 Apr 2015 03:19 PM
If you have at least a 7th grade education, you should be easily able to follow along with this.

First, we start with Hubble's Law. This is a law in physics that says "v = Hd", or the velocity galaxies are receding from us is equal to the Hubble parameter times their distance.

What is the Hubble parameter's value? Well, it's been measured by NASA's WMAP satellite as being 71.0 (km/sec)/Mpc where an Mpc is a megaparsec. A megaparsec is 3.09 x 10^19 km. So if we replace "Mpc" with this value we get 71.0 (km/sec)/(3.09 x 10^19 km) which calculates to 2.30 x 10^-18 sec^-1. Remember, this is still the Hubble parameter. All we did was adjust the units. 2.30 x 10^-18 sec^-1 is equal to 71.0 (km/sec)/Mpc. NASA just writes it the latter way because it's neater.

Now, velocity in Hubble's law, the v, is just speed. Speed is distance over time. Thus, v = Hd can be changed to d/t = Hd. All we did was change "v" to "d/t". Simply by multiplying both sides by t, we get d = Hdt, then dividing both sides by d, we get 1 = Ht. Now we can divide both sides by H and we get t = 1/H.

Let's take t = 1/H, and since we know what H is, just plug it in, and we get t = 1/(2.30 x 10^-18 sec^-1). This calculates to 4.35 x 10^17 sec. If we simply Google "4.35 x 10^17 sec to years" we get 1.38 x 10^10 years.

If we expand out 1.38 x 10^10 we get 13,800,000,000 years.
13,800,000,000 years is 13.8 billion years.

Now you know why the universe is said to be roughly 13.8 billion years old.
It's simply due to a mathematical proof.
Report Abuse
TheEmperorOfTheOcean is not online. TheEmperorOfTheOcean
Joined: 26 Jul 2013
Total Posts: 5832
25 Apr 2015 03:22 PM
no ur wrong stupiod kiud lev
Report Abuse
jonny1367 is not online. jonny1367
Joined: 04 Jul 2010
Total Posts: 33252
25 Apr 2015 03:23 PM
lol so we came from nothign XD
Report Abuse
Sankoro is not online. Sankoro
Joined: 14 Dec 2014
Total Posts: 7243
25 Apr 2015 03:23 PM
/r/iamverysmart

Help get this published!: http://www.roblox.com/Rainbow-Galaxy-Shaggy-item?id=241850348
Report Abuse
Ninths is not online. Ninths
Joined: 13 Apr 2012
Total Posts: 11465
25 Apr 2015 03:24 PM
wow thanks google

i learned never to go fishing with celebrities: jeremy wade caught a perch and said it was a river monster, billy mays cleaned his trout with a shamwow, and skrillex dropped his bass
Report Abuse
CuteBabyLIama is not online. CuteBabyLIama
Joined: 17 Apr 2015
Total Posts: 389
25 Apr 2015 03:25 PM
@jonny

Just like the virtual particles all around you at this very moment.

@Sankoro

You really think knowing 7th grade math makes you "very smart"?
Report Abuse
Sankoro is not online. Sankoro
Joined: 14 Dec 2014
Total Posts: 7243
25 Apr 2015 03:25 PM
"You really think knowing 7th grade math makes you "very smart"?"

no i'm just calling you incredibly pretentious

Help get this published!: http://www.roblox.com/Rainbow-Galaxy-Shaggy-item?id=241850348
Report Abuse
CeliCopter is not online. CeliCopter
Joined: 25 Jul 2014
Total Posts: 15716
25 Apr 2015 03:26 PM
"You really think knowing 7th grade math makes you "very smart"?"

when you type a long-ass paragraph about it just to stir something up then yes
Report Abuse
Negativize is not online. Negativize
Joined: 02 May 2011
Total Posts: 25068
25 Apr 2015 03:27 PM
'I can prove the Big Bang with 7th grade math.'

Yes, you can tell us HOW old the Earth is, but can you tell us why?
Report Abuse
nucleartorpedont is not online. nucleartorpedont
Joined: 10 Jul 2013
Total Posts: 6554
25 Apr 2015 03:27 PM
nice copy+paste

i dont give a horn to a buffalo
Report Abuse
VengenceVinny is not online. VengenceVinny
Joined: 24 Jun 2014
Total Posts: 15335
25 Apr 2015 03:29 PM
"Yes, you can tell us HOW old the Earth is, but can you tell us why?"
do you really
nevermind

MUMORPUGER
Report Abuse
CuteBabyLIama is not online. CuteBabyLIama
Joined: 17 Apr 2015
Total Posts: 389
25 Apr 2015 03:32 PM
@Sankoro

And I'm calling you a moron who think that knowing 7th grade math makes you "pretentious". The fact that you honestly think knowing 7th grade math and using it is "showing off" just demonstrates that you are probably far behind 7th grade math.

@Negatize

Eh, I did say why. Because of the mathematical proof.
If you want to know how this mathematical proof manifests itself in reality, I can explain, but this leaves the realms of 7th grade math.

Basically, imagine a balloon that's deflated. Put some black dots on it with one purple dot, then begin blowing it up. You will find that the dots closest to the purple dot move away from it slower than the dots farthest away. That's Hubble's Law, v = Hd.

If you measure the speed they're receding from the purple dot and the distances, you can calculate a "H" value for your balloon. Then you can plug that H value into the equation t = 1/H and then you get the time your balloon has been expanding.

Essentially, Hubble's Law is a mathematical representation of the expansion of the universe, and t = 1/H just tells us how long it has been expanding for.

@nuclear

You know there's a little thing called "Google" you could check before making such pathetically stupid claims, right?
Report Abuse
nucleartorpedont is not online. nucleartorpedont
Joined: 10 Jul 2013
Total Posts: 6554
25 Apr 2015 03:33 PM
so you think im brainless op?

i dont give a horn to a buffalo
Report Abuse
Previous Thread :: Next Thread 
Page 1 of 1
 
 
ROBLOX Forum » Club Houses » Off Topic
   
 
   
  • About Us
  • Jobs
  • Blog
  • Parents
  • Help
  • Terms
  • Privacy

©2017 Roblox Corporation. Roblox, the Roblox logo, Robux, Bloxy, and Powering Imagination are among our registered and unregistered trademarks in the U.S. and other countries.



Progress
Starting Roblox...
Connecting to Players...
R R

Roblox is now loading. Get ready to play!

R R

You're moments away from getting into the game!

Click here for help

Check Remember my choice and click Launch Application in the dialog box above to join games faster in the future!

Gameplay sponsored by:
Loading 0% - Starting game...
Get more with Builders Club! Join Builders Club
Choose Your Avatar
I have an account
generic image