Tag Archives: energy

The energy of the sun

I’m sitting in the morning sun, feeling the rays warm my shoulders and back. I love this feeling. It’s not so hot that I feel I need suntan location, and yet it’s warm enough to bring the heat to my attention.

While energy can’t be created or destroyed, we know it can be transformed from one form to another. The rays of the sun initiate the process of photosynthesis, which creates sugars and gives us the mass of trees. What an amazing thing! But going further, when we say that energy can’t be destroyed, it certainly can be tapped and taken advantage of. There is an incredible abundance of energy in our world. While in a closed system the amount of energy stays constant, we do not live in a closed system.

We live about 150 million kilometres away from our sun, a blazing ball of energy that constantly sends a massive amount of energy our way. It actually sends that energy out in every direction and we get in the way of a infinitesimally small amount of it as the earth sits within gravitational equilibrium of this glowing fireball of power.

It is the earth’s battery, and it is the ultimate provider of light, energy, and life. We’ve only just begun to understand how to tap this power, and one day we will learn to store it in such a way that energy will be almost completely free. How different will our world be then?

On a small yet very significant scale, the poor will have light without kerosene, and formerly forested areas in places that now have scarcely enough wood could be allowed to grow again, without the needy scrounging for firewood. On a large scale, industry could pollute far less with the lack of need of fossil fuels to run machinery.

Imagine a world where energy is literally created out of thin air? Tapped from the power of our sun, and shared wherever needed. It would be a very different world!

The mass of trees

There are many questions that might seem simple but aren’t. For instance, where does the mass of trees come from?

Many people believe it comes from the soil. However, most of a tree’s mass comes from carbon… in the air.

This is one of those tidbits of information that if you know it, it’s not a big deal, but if you don’t, well then you likely either checked the date of this post to see if it was written on April Fools, or you did a Google search.

While it is interesting to dig into the science of this and learn about photosynthesis, and study the exchange of gasses, and what happens to carbon in the process, it’s also wonderful to marvel at the idea of what’s happening: Trees grow and get their size out of the air.

Here’s a quick video that explains it.

Here is another thought about trees. They won’t grow without the energy of the sun doing the work to convert the carbon from the air into the mass of the tree… so when you throw a log into a fire, you are converting energy captured by the sun back into heat energy.

From Wikipedia:

In physics, mass–energy equivalence is the principle that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein’s famous formula:

This is a big jump in thinking, but isn’t it interesting that so much of the mystery of life and our universe can be derived from the mass of a tree?

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* Update: See the first comment by Stephen Downes that points out my error in connecting the relationship to the mass-energy equivalent… I should have just left this post at the marvel of trees growing out of air!

Gas in my tank

Yesterday evening was the Inquiry Hub Open House.

Here is a snippet from the ‘Cold Open’ that started the event, a song written by one of our students.

I wrote about the rehearsal and shared it here.

My day started with my meditation at 5:30am and getting to work by 7:20. I got home after the event at just before 10pm. I should have been exhausted, but the event was so rejuvenating! I came home and had a late night 2nd dinner, and was asleep just after 11pm. That should be a wipeout kind of day.

It wasn’t.

Watching our students showcase their school and their passion projects was wonderful. The enthusiasm was contagious. The night filled my gas tank. Sometimes we need events like this to pump some fuel into us, and get us off ‘E’. I’m ready to cruise through the craziness of the month ahead.