Wednesday, February 27, 2013

Saturday, February 16, 2013

Monday, January 7, 2013

Doesn't a "wave" require a "medium" through which to propogate?

 Physically speaking, sound is transported by the collisions of molecules. The easier it is for molecules/atoms, to collide (higher density of the medium) the faster sound travels. Above 100 km altitude, the average distance between air molecules is so high, that these molecules don't collide on a regular base and spend most of the time flying in their own orbits, just like very small satellites. No collisions, no transport of sound. 

Just as the velocity of sound depends on the density of the medium through wch it is being propogsted, the velocity of light also varies depending on the medium through wch it is propogating.

Thus the speed of light is not constant ,but changes according to the density of the medium (and temperature) it is traveling through.
Light has a constant speed of 3 x 10^5 km/second = 299,792,458 meters/second = (186,282 miles/second) =(9.5 trillion kilometers /year) through the medium of a vacuum or empty space(according to quantum physics even a perfect vacuum is not empty,but teeming with virtual particles that are popping in and out of existance over very short time frames.This suggests that so-called "empty space" is actually permeated with unobservable energy and invisible forces that are inaccessible to our senses.The energy density of empty space is immense and might account for the missing "dark energy" that is unobservable.If we could tap into this hidden store of energy we would have an unlimited source of fuel/energy.However no one has yet come up with an experimental method to weigh a cubic meter or more of "empty" space in order to measure the weight/mass-equivalence of the virtual particles contained therein).

How can massless energy(photon) materialize into a particle with mass and inertia?

If the speed of light diminishes with increasing density of the medium through wch it travels, at what density of matter would the velocity of light become zero?).
Perhaps the reason light cannot emerge from a Black Hole has something to do with the very high density of it's content/composition?
Light slows to about 225,000 km (140,000 miles) per second when it goes through water( speed of light in ice is 2.29x10^8 m/s) ,and about 206,000 km (128,000 miles) per second when it goes through quartz crystal and 124,000 miles per second through glass. A diamond, , will slow light to 125,000 km (78,000 miles) per second--this is less than half the speed through vacuum!).
Composite white light separates into its constituent frequencies upon passage through a transparent prism because each frequency is slowed down to a different degree according to its energy content.

But photons don't really slow down.rather each hits an atom,gets absorbed and another gets emitted. This process takes different amounts of time depending on the medium and the energy content (frequency) of the photon,hence the time delay.The photon that strikes the window is not the one that emerges on the other side.Is this a complete explanation of the mechanism by wch light slows down when it enters a denser medium?

Light moving through a Bose-Einstein Condensate ( a state of very condensed matter found at near absolute zero)travels at very slow speed. What determines this difference between how much light is slowed?Lene Hau was able to slow light to 17 metres per second by passing it through a transparent superfluid --Bose-Einstein Condensate--a state of matter that only exists at near absolute zero temperatures.Dr. Hau and her associates at Harvard University have successfully transformed light into matter and back into light (was able to momentarily stop/capture a beam of light)using Bose–Einstein condensates. Details of the experiment are discussed in the February 8, 2007 publication of the journal Nature (see entry in this journal titled "Light and Matter United")
Since most of space is within a few degrees of absolute zero (the temperature at wch Bose-Einstein Condensates occur)it is not outside the realm of possibility that light has traversed such a state of matter in reaching us .Such an occurrence would necessarily have slowed it's speed unpredictably and makes "distance to origin" calculations of questionable acracy!This means that light passing through a cloud of dust,gas , plasma,or a Bose-Einstein Condensate (i.e.,non-empty space) would have it's path refracted and/or slowed thereby giving an observor a false position for the emitting object.

Can we ever accurately know the exact (versus apparent ) position of light-emitting objects in the night sky?

Tuesday, December 25, 2012

the enemy within

suicide shooters filled with hatred bent on destroying
others and themselves. Suicide is an act of despair!

What makes a person want to kill themself?

We do not destroy what we love!

Unless goodness outweighs evil, life cannot continue!

The battlefield where the war between good and evil (love and hatred) must be fought
is within the heart of every man!

Parents and educators must learn to instill
empathy and self-esteem in children.
Unless childrem grow up feeling valued and loved
they will not value themselves or others!
Teach the children to respect and cherish life.
Teach the children not to kill!

When we grow up inundated with graphic media images of violence on television,newscasts,videogames,etc.
we become innured/desensitized to violence,
and the use of force to achieve one's desires
becomes legitimized/normalized.

Saturday, December 22, 2012

Quotes from Elisabeth Kübler-Ross

"The most beautiful people we have known are those who have known defeat, known suffering, known struggle, known loss, and have found their way out of the depths. These persons have an appreciation, a sensitivity, and an understanding of life that fills them with compassion, gentleness, and a deep loving concern. Beautiful people do not just happen." ― Elisabeth Kübler-Ross

Learn to get in touch with the silence within yourself, and know that everything in life has purpose. There are no mistakes, no coincidences, all events are blessings given to us to learn from. Elisabeth Kubler-Ross

The ultimate lesson all of us have to learn is unconditional love, which includes not only others but ourselves as well. Elisabeth Kubler-Ross

I believe that we are solely responsible for our choices, and we have to accept the consequences of every deed, word, and thought throughout our lifetime. Elisabeth Kubler-Ross

It's only when we truly know and understand that we have a limited time on earth - and that we have no way of knowing when our time is up, we will then begin to live each day to the fullest, as if it was the only one we had. Elisabeth Kubler-Ross

People are like stained - glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from
within. Elisabeth Kubler-Ross

There are no mistakes, no coincidences. All events are blessings given to us to learn from. Elisabeth Kubler-Ross

We need to teach the next generation of children from day one that they are responsible for their lives. Mankind's greatest gift, also its greatest curse, is that we have free choice. We can make our choices built from love or from fear. Elisabeth Kubler-Ross

As far as service goes, it can take the form of a million things. To do service, you don't have to be a doctor working in the slums for free, or become a social worker. Your position in life and what you do doesn't matter as much as how you do what you do. Elisabeth Kubler-Ross

I say to people who care for people who are dying, if you really love that person and want to help them, be with them when their end comes close. Sit with them - you don't even have to talk. You don't have to do anything but really be there with them. Elisabeth Kubler-Ross

It is not the end of the physical body that should worry us. Rather, our concern must be to live while we're alive - to release our inner selves from the spiritual death that comes with living behind a facade designed to conform to external definitions of who and what we are. Elisabeth Kubler-Ross

Live, so you do not have to look back and say: 'God, how I have wasted my life.' Elisabeth Kubler-Ross

I've told my children that when I die, to release balloons in the sky to celebrate that I graduated. For me, death is a graduation. Elisabeth Kubler-Ross

Watching a peaceful death of a human being reminds us of a falling star; one of a million lights in a vast sky that flares up for a brief moment only to disappear into the endless night forever. Elisabeth Kubler-Ross

Dying is something we human beings do continuously, not just at
the end of our physical lives on this earth. Elisabeth Kubler-Ross

I didn't fully realize it at the time, but the goal of my life was profoundly molded by this experience - to help produce, in the next generation, more Mother Teresas and less Hitlers. Elisabeth Kubler-Ross 

Should you shield the canyons from the windstorms you would never see the true beauty of their carvings. Elisabeth Kubler-Ross 

For those who seek to understand it, death is a highly creative force.
 The highest spiritual values of life can originate from the thought and study of death. Elisabeth Kubler-Ross&

Those who have the strength and the love to sit with a dying patient in the silence
that goes beyond words will know that this moment is neither frightening nor painful,
but a peaceful cessation of the functioning of the body. Elisabeth Kubler-Ross 

It is difficult to accept death in this society because  it is unfamiliar.
 In spite of the fact that it happens all the time, we never see it. Elisabeth Kubler-Ross 

Read more at
http://www.brainyquote.com/quotes/authors/e/elisabeth_kublerross.html#KGwOzX3pPQ6HAlbH.99

p
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Thursday, December 20, 2012

Without love there could be no life!

"Give a Little Love" video shows the importance of giving to others:

http://touch.dailymotion.com/video/xvtu7r_give-a-little-love_shortfilms

http://www.huffingtonpost.ca/2012/12/10/give-a-little-love-ad_n_2271121.html

"If you give a little love, you can get a little love of your own."

Using this quote as the inspiration for a video that has gone viral, this four-minute clip, which looks to be the work of non-profit Christian organizationKřižovatka Olomouc in Czech Republic or talented YouTube user Graham Kervin, shows us the importance of doing good deeds.And a good deed can mean anything from holding the elevator for a stranger, helping your neigothers doesn't need to be a huge effort, but only means going out of your way slightly to take others into consideration.Labelled "A few minutes of perfection," by a user on Facebook, it has over 140,000 shares and 45,000 likes. It follows an average day for a group of strangers, who each get inspired to perform an act of kindness after watching someone else do so — the perfect example of the domino effect. It also mixes in video clips of a young boy who painted over a vandalized wall. 



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love brings life into the world/universe!
Without love there would be no life!!!


"They drew a circle that shut me out.
But love and I had the wit to win.
We drew a circle that took them in!"

_poet Edwin Markham

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10th National Symons Lecture

David Suzuki delivers the 10th National Symons Lecture on the State of Canadian Confederation entitled "Humankind as a Geological Force." (November 16, 2012)

http://cpac.ca/eng/programs/podium/episodes/david-suzuki-10th-national-symons-lecture