Skip to main content

The problem with time and age of universe (or age of anything celestial)

(ok this is quite a random post, but something that have been on my mind for quite some time)

As we all already know from Einstein theory of relativity, time, is relative to gravity and speed of the observer. An observer which moves at a faster speed experiences time which is slower than another observer which moves at a slower speed. An observer which on a planet with higher gravity experiences time which is slower than an observer which on a planet with a lower gravity.

In the big bang theory, the universe started off at a singularity point which have near infinity mass, with near zero volume, leading to a near infinity gravity. If there is an observer during the big bang, and the observer is within at the point which have the highest gravity, the observer will observe that it tooks longer for the big bang to happen and expand to bunch of galaxies than an observer who are outside the singularity's gravitational field, whom might observe the big bang happened and expanded to bunch of galaxies in just a few seconds.

We creatures on earth always uses our time scale to measure the age of universe. However, the universe is expanding from a state of high gravity, and each galaxy moves at different speeds and have different gravity, and even earth was rotating at different speed during its early birth, leading to inconsistent measurement of time across this period from big bang to today.

Or am I missing something?

http://en.wikipedia.org/wiki/Gravitational_time_dilation
http://en.wikipedia.org/wiki/Time_dilation
2 comments

Popular posts from this blog

Consolidated community site infrastructure on Plone

In Inigo, we believe in helping out local FOSS communities and help them grow. We help out in community events where we can, present FOSS talks, and provide some platforms for local communities to grow. One of such platform is our consolidated community site infrastructure on Plone.

The system/infra and its components was originally developed for the Fedora Malaysia website, while keeping in mind to keep it generic enough so that other communities could use the same components for their own community sites. The infra is already at a usable state, and we can add new sites easily with just a few clicks.

Features in this consolidated infra are:
Document/Content management (Plone built-in)Calendar system (powered by solgema.fullcalendar addon)Conference/BarCamp system (powered by collective.conference addon, which was developed for FUDCon Kuala Lumpur 2012)Blog (powered by Products.Scrawl)Simple yet powerful theming engine (powered by plone.app.theming/ Diazo) - Check out Diazo, you'l…

Adding simple popup to Plone frontpage

Here is a little guide for those who want to add a simple popup to the Plone frontpage for some purpose (eg: announcements, advertisements, etc).

Create a basic html file containing the content you want to appear in the popup. Upload it into $PLONE_SITE/portal_skins/custom (as Page Template) and for the sake of this example, name it popup.html

Afterward, create a Javascript file with your Pop-Up loader script. For example , this script:


function popup(mylink, windowname)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
href=mylink;
else
href=mylink.href;
window.open(href, windowname, 'width=220,height=400,scrollbars=no');
return false;
};

popup('popup.html', 'My Popup');


Also upload this file into $PLONE_SITE/portal_skins/custom (as Page Template too). For this example, name it as popup.js

Afterward, in $PLONE_SITE/portal_javascripts , add popup.js as a new script into portal_javascripts…

HOWTO: Mirroring Yum repositories using Yum-Utils

As promised before in one of my previous post, a Howto on how to mirror and manage yum repositories using some of the utilities in yum-utils.

The first step is, well, of course, is to get yum-utils from fedora repository
yum install yum-utils

Reposync
Reposync is a utility for mirroring and synchronizing local copy of a yum/rpmmetadata repository.

This utility is very useful if you wanted to make a yum repository mirror. Before this, I used "wget -R -np -N" but this method is a little bit tedious and it doesnt work with repos that didn't use directory listing. Plus, it also download together additional site stuff that I don't need/want and it doesn't verify checksum of the downloaded packages.

Mirroring a repo using this utility is easy, just execute this command
reposync -r <repoid> -a <arch> -n
and the repo will be mirrored in a folder with the same name of the repoid in the directory you executed the command. Eg: you executed the command in /mnt/storage/mi…