Insulate Yourself

Also, today Lifehacker via Low-tech Magazine reposted a short article about the merits of adding layers of insulation to your body instead of overly heating or adding insulation to your dwelling. I can confirm that putting on layers does in fact keep you warmer. I can also confirm that 55 degrees F indoors is not particularly enjoyable and I’d rather have a better insulated dwelling instead of wearing my belay jacket indoors at all hours of the day.

Also, while I appreciate the sentiment of “put on a sweater” or “put on more layers” as the differential between the outdoor and the indoor temperature increases, air leaks become even more noticeable. When it was 8 degrees F outside one night the draft inside our 100 year old home, whether running the gas heat or not, was incredible. Now that the weather has warmed up the indoor temperature is much more stable and the draft is significantly less noticeable.

There are lots of pages online about “sensible“, “latent” and “convective” heat and cooling loads. I found a nice page from Dr. Chan in Hong Kong, he has pages on both cooling and heating calculations.

Indoor Belay Jacket

Indoor Belay Jacket

Sagan

I felt a strong need to repost this. Thanks goes to Rob Vandermark of Seven Cycles for doing the transcription, the piano composition was done by Michael Marantz, this particular edit was done by Damewse on Youtube, and of course Carl Sagan’s book Pale Blue Dot.

We were hunters and foragers.
The frontier was everywhere.
We were bounded only by the earth, and the ocean, and the sky.
The open road still softly calls.
 
Our little terraqueous globe is the madhouse
of those hundred, thousand, millions of worlds.
We who cannot even put our own planetary home in order,
riven with rivalries and hatreds,
are we to venture out into space?
 
By the time we’re ready to settle even the nearest other planetary systems
we will have changed.
The simple passage of so many generations will have changed us;
necessity will have changed us.
We’re an adaptable species.

It will not be we who reach Alpha Centauri
and the other nearby stars.
It will be a species very like us,
but with more of our strengths, and fewer of our weaknesses:
more confident, far seeing, capable, and prudent.
 
For all our failings, despite our limitations and fallibilities,
we humans are capable of greatness.
What new wonders undreamt of in our time 
will we have wrought in another generation? 
And another?

How far will our nomadic species have wandered  
by the end of the next century? 
And the next millennium?
 
Our remote descendants safely arrayed on many worlds 
through the solar system and beyond,
will be unified, 
by their common heritage,
by their regard for their home planet,
and by the knowledge, that whatever other life may be,
the only humans in all the universe come from earth.
 
They will gaze up and strain to find the blue dot in their skies.
They will marvel at how vulnerable the repository of all our potential once was.
How perilous our infancy.
How humble our beginnings.
How many rivers we had to cross
before we found our way.

– Carl Sagan (1934-1996)