Making the fireplace work better

I’ve fiddled with how we work the fireplace today. It was a snowy day and we just wanted to stay home and take it easy. So we had hours to just tend the fire so, I tried to experiment to see how we could get the most heat with the least wood. After practicing today, I’ve got so much heat coming out of the fireplace that you can’t sit within couple of feet of the opening and the wood is burning much slower (hour or more per log). A cup of soup heated up to boiling in a few of minutes by placing it about 18″ in front of this fire.

Here’s the principles that seem to help the most.

  1. Orange coals radiate more heat than flames.
  2. Lower flames burn wood much slower.

To get the most heat, keep the orange coals facing out in to the room where they can radiate heat. Fires transmit by convection and radiation. Convection is the hot air coming off the fire, most of this goes up the chimney, a good thing if you don’t want a room full of smoke. That means that most of the heat going into the room is from infrared radiation. The orange coals produce a ton of radiant heat. To get the most heat, let a bank of orange coals build up under the grate. Use the shovel to keep them together and piled as high as possible, remember you want the most surface area aimed back into the room. I’ve got about 6 to 8 inches of these hot coals banked up under the grate and they radiate like crazy. You’ll want to remove anything that blocks radiation, screens, glass, etc… whenever possible. The other thing that I found that blocks a lot of heat is the new wood added to the fire. I stopped adding it to the front where it insulated the room from the radiant heat. Put new (cold) wood in at the back and pull it to the front as the other wood burns into coals. This will keep the hottest part of the fire to the front and you can use the log in the back to as a plow to conintously bring hot burning wood to the front.

Fire Image

Look at all the orange coals radiating heat into the room and a very low flame on top.

You’ll also notice that there’s very little flame on this fire. Flames are hot gasses and plasma released by the fire. They are evidence of moving gas (convection currents) and mostly just carry heat up the chimney.  In a fire, the movement of air is called “draft”. One of the reasons that wood stoves are so much more efficient is they control the amount of air to the fire so the burn is slow and hot. While a fireplace will never compete with a wood stove for efficiency, you can control the draft by keeping the fire tightly concentrated over the hot coals, limiting the space between the logs so that not too much air flows between and using coals on the top of the logs to ensure a complete burn. By keeping the logs tightly spaced over the bed of coals, you ensure that hot air rising off the coals flows as slowly as possible over the wood that needs to be burned. This will make the wood burn hotter with less smoke. The close spacing of the logs acts like a baffle, slowing the air as it has to pass between the tight spaces. This backed up air is very hot and can make the wood above spontaneously combust. You can further heat this air at the time it contacts the wood by putting some larger orange coals on top of the logs in the spaces between the logs. The air moving through these spaces between logs, effectively blows on the coals providing more heat and oxygen for a hotter burn. If there are some black coals near the edge of your banked coals, try putting them on top for a more complete burn.

 

Leave a Comment

Filed under Home

Discovering the Designer

I’m a few weeks into riding a new (to me) motorcycle. It’s quite a bit different than my previous one, I’ve changed from a cruiser to a sport touring style bike. They are very different, the cruiser was loud with lots of chrome. On the cruiser you sit more upright, like a in a chair, and the handlebars are quite wide set. The new sport touring bike has a position that’s much more like riding a horse. Hands are in close, knees against the bike and leaning slightly forward. Again, very different.

I spent several years tailoring the cruiser to my liking. New seat, risers to get the bars in jus the right place, GPS for speed and direction. It was the perfect elixir for a “gadget guy”, there was always something to tweak. One more element to polish. When I got the new sport touring bike, I was temped to start with my “gadget guy” tweaks. After all, that’s what “gadget guys”!

But, I decided to move a little slower and perhaps take a different path. This bike has unusual turn signals, one on each thumb rather than a single switch on the left thumb. After using them for a while, it just made lots of sense that you’d put the left and right signals on the hand in the direction of the turn. It just makes sense that as you push a hand to make the bike lean that the signal push button would be on that hand you’re pushing already. Just a little pressure on the thumb rather than working a switch to the left and right while applying pressure on the bars to make the bike lean into the turn. It was just to natural. Someone gave it some thought, to do something different than everyone else. Wonder what else they put a lot of thought into? How many other things are in certain place or work a certain way because a designer put some real thought into how things work.

Maybe I should consider a more careful approach. Rather than trying to make adjustments, I would try and discover the designer’s intent by taking everything that wasn’t stock off and returning all riding position adjustments to something of a mid-point. With everything back to zero, I’d ride long enough to discover why things are the way they are. Surely the designer put lots of thought into where my hands, feet and rear end would be and how all of those would work with the machine I’d be riding. I would try to resist the “gadget guy” impulse to get new toys and tweak here and there. I continue to find little things that make it more comfortable and easier to handle while on the move.

This approach only works when both the designer and the user are careful about their interactions. If the designer fails to make the design great, his efforts are wasted and likely unappreciated. If the user reacts in a negative way to every unconventional change that a design introduces, the designer’s effort and talent is also wasted. Perhaps, since we each play both of these roles at different times, we should be more careful. When we design, produce great designs; take the time to think and make the value of the design within easy grasp of the user. Make things that feel natural and lead the user to the maximum value for their time. When we’re a user, take the time to discover the designer’s intent. Try to firms the why behind how things work before we adjust or complain about and unconventional practice, maybe there’s a really good reason why things are they say they are.

Leave a Comment

Filed under Design, Technology

FORTRAN had all the answers. Why are we messing around with .NET, Java, Ruby etc…?

I don’t know why we’re still working hard at coding and debugging, IBM solved all these issues is the 1954 FORTAN specification.

“Since FORTRAN should virtually eliminate coding and debugging, it should be possible to solve problems for less than half the cost that would be required without such a system.”

Maybe we should dump all this new stuff and go back to FORTRAN. Or even better, realize that language choice is only one tool choice that developers make on the path to delivering for a customer. Like a choices between tools, it’s about making sensible trade off between tools. There aren’t and never will be magical tools that solve problems and make everything easy. Software is hard and complex because is serves people and people are hard and complex to serve well. If you’re looking for magic stop and start paying attention to the people your suposed to serve with your talent and tools.

Leave a Comment

Filed under Software Development, Technology

Empowerment or Endowment

Several times today, I heard the word empowerment. The last was on a podcast where folks that just graduated from business school were discussing what to do if their employment didn’t empower them to make a difference in the world. I found it disappointing that folks of such high capacity felt the need for permission in order to make a difference in the world or to realize their dreams. I’d like to offer a different perspective and a different word – endowment.

The U.S. founding father’s thought that we all had a, self evident, inalienable gift from our Creator. To them, our life, liberty and capacity to pursue our own happiness was an endowment granted by a benevolent Creator. We’ve each been given by our community, family and education institution endowments. These endowments are gifts, freely given, of power and opportunity. Endowments are special gifts because they are anticipated to have a perpetually increasing value. When a benefactor funds and endowment to an institution, it is expected that gift will provide a perpetual source of funding through the interest generated by the endowment. Indeed, the institution is obligated to provide stewardship over the endowment so that the principal is never lost and the interest never ends.

I prefer to take the view that having been given so much, by way of endowments from Creator, country, family and community, I have a responsibility to be a good steward. I need to ensure that those gifts are able to yield perpetual interest because, I’ve been given a stewardship by my benefactors. I need no one’s permission and no special set of circumstances. The gifts I’ve been given require me to the most them wherever life places me. As recipient of so many endowments I have the power within myself to be happy and make a difference in the world, no empowerment or permission needed.

Leave a Comment

Filed under Uncategorized

Individuals and interactions over processes and tools

Silicone, gallium arsenide and some other materials can be combined, “doped”, with other elements that make them carry some extra, or a few less, electrons. When these differing charges are placed next to each other, there is a slight difference in their electrical charge that forms the electrical barrier. To the flow of electrons it is equivalent of those spikes in the road at the exit to paid parking lots that let you go out, but make it unpleasant difficult to go the other direction. By running a electrical current across the barrier, an additional charge can be built up that last for a very short period of time. By repeatedly reading and refreshing this charge at the junction between materials can give the illusion of “remembering” it’s state as long as there’s power to keep the read/refresh cycle going. What’s amazing is that these junctions can be made unbelievably small, sometimes just a few atoms wide, so that billions of them can fit in a space almost too small to see. Because the can have two states, charged or not, we use them in groups to represent binary numbers like 1001 (9) or to do binary math like, 1+1=10. These little junctions can do some even more clever things, in some cases they can give off light when an electrical current is pass thought them, enter the light emitting diode (LED). By using the stored numbers to control the brightness of millions of red, green, and blue LED’s your brain can be fooled into seeing color, line, texture and even motion. And that is, very likely, what’s making it possible for you to read this. The silicone, electrical charges, currents and even the light are real and they were all made by very real people. Everything that your brain is seeing on the screen right now is an illusion. Software development is all about creating illusionary environments that make life easier, faster or more convenient. We are so stunningly good at crafting illusions and using them, that it’s not easy to remember it’s not real.

People are real and they come with all kinds of interesting quirks and challenges. They change their minds, get happy or sad, and each has a unique perception of the world around them. Believe that each person comes equipped with intelligence and free will to make choices. Not just choices on what to do but, how to react to the world around us. We tend use these choices to tailor our life experiences to match our perceptions about the world around us. Because each perception is unique, built on a lifetime of experiences, prejudices and even fantasy, we all react to our world in different ways. The most difficult challenge of software development is to craft a computer generated illusion that matches a person’s or group’s perceived idea about a real world experience in a way that makes the experience better. The value created by the improved experience is the economic engine that makes all software work possible.

So software is all about human interaction with the software we create and, even more importantly, the personal interactions we have with users, business sponsors and each other. A focus on where value creation really happens would help each of us to align our thoughts and behaviors in executing our craft. All of the human interactions involved in software development either create or destroy value. We need to be careful with what we create. We also need to remember That the personal interactions, not just the software, has the potential to create or destroy value. Indeed, the act of software creation is a performance art that’s all about improving human interactions. Whether in the software crafted or your personal behaviors, every interaction counts and will either create or destroy value.

Despite what vendors would have you to believe, the latest tools don’t create any value in themselves. Tools are only valuable in and to the extent they help us craft better illusions or have better human interactions.

Leave a Comment

Filed under Software Development, Technology

Agile Software After a Decade

I was surprised when on a call with Diego Lo Giudice of Forrester on Agile Software Development a few weeks ago how little thought I’d given agile practices and how much my attitude had changed. I was also taken back a bit about how our company, se2, had changed in it’s agile implementation.

It wasn’t that I had moved away from it in our work, quite the contrary I think we’re much stronger now. It was just that Agile wasn’t the primary actor on the stage. Agile techniques had moved to the background on a stage where teams were delivering software. I clearly remember having study groups to review agile books, lengthly debates on what was or wasn’t agile, and tempers flaring as non-agile practices were intruding into our work space. There were clear lines drawn between the agile and non-agile people with everyone, internal or external, clearly labeled as true believer, heretic, or (even worse) something in between. There was also a intense focus on evaluating techniques and tools to determine if the were or could be made “agile”. If not, they would need to be quickly jettisoned or at very least hidden from view. I was certainly in the lead of the band of heros or nuts, depending on your point of view, that was very serious about changing the way we worked. I’m not sure you can ever really make a change without quite a bit of passion and perhaps being somewhat a zelot.

So what has changed? Almost ever where you got, teams are doing agile without thinking about it. Sprints happen across the organization as a very matter of fact event, no fanfare it just gets done. Our focus, in many ways, has shift from ourselves and our work to our customers and their needs, this is a good thing. I’m becoming more convinced that technologists that are inwardly focused, the default mode for introverts, are something of a menace to their organizations. Our real purpose is to use the tools, talents and materials in our stewardship to bless others. We have been given the gift to work at the center of an industry whose capabilities are exploding at the same time when costs are plummeting. By way of example, look at the cost of sequencing the human genome, since 2008 it’s dropped by something like a factor of 10,000

Human Genome Sequencing Cost Dropping

If the same thing happened in automobiles, you’d be able to drive a Lexis for less than you’re paying for a meal a Taco Bell. We are part of unique time and we’ve been given the opportunity to have a disproportionate impact on our organizations and the world. I think it’s time we focus on serving not just polishing our tools.

As I though about this change and it’s impact early this morning, I had the thought that it might be helpful to look back at the Agile Manifesto. I’d been living it but, it had been a long time since I read it (yes, it’s on the wall behind my desk and I still han’t looked at it). Published in 2001, yes a decade ago, it was the document that started it all in earnest. Here’s what it says,

We are uncovering better ways of developing
software by doing it and helping others do it.
Through this work we have come to value:

Individuals and interactions over processes and tools
Working software over comprehensive documentation
Customer collaboration over contract negotiation
Responding to change over following a plan

That is, while there is value in the items on
the right, we value the items on the left more.

I think what I’d like to do is take each of the four key concepts and, over next few weeks, post on what I think they mean now, as compared to my early agile experiences. It’s a little hard to fathom that it was almost a decade ago that I started trying XP with small teams sequestered in a conference room. A lot has changed since then, mostly my attitudes, but also how the world reacts to agile.

Dispersion of Innovation

In the early decade when I started, we were clearly in the Innovators area, boldly dashing where angels fear to tread. But, now I’m guessing we are more toward the Majority segments. A 2008 survey found, “69% of respondents indicated that their organizations are doing one or more agile projects.  Of those that hadn’t yet started, 15% believed their organizations would do so within the next year”. A lot more people and organizations are comfortable with agile and the Laggards are starting to think it through.

I’m also starting to wonder where we go next, agile techniques have allowed us to make a big leap forward. Improvements of 6 to 10 times in productivity were not unheard of as agile was adopted. Where will the next leap come from, not sure yet?

Leave a Comment

Filed under Software Development, Technology

Fuji X-100

Got to play with a Fuji X-100 at Wolfes today. Pretty cool camera but I think I’ll wait for the second versions because of the following weaknesses in the current version:

  1. Manual focus not very useful
  2. Can’t put filters on without a special adapters
  3. Menus kind of quirky
It is a joy to handle and all the reviews I’ve seen indicate it makes great images.

Leave a Comment

Filed under Photography

Mormonism and Politics

Christ at the doorI’ve been hearing some of the noise lately about Mormons being, not Christian and part of a cult. This latest iteration, seems to have swirled up around Mitt Romney and Rick Perry. It would appear that a baptist minister made some unfortunate remarks while introducing Mr. Perry. I thought that Anderson Cooper did a nice job interviewing the minister. It’s really disappointing that this type of attitude is considered acceptable in a political discussion. Aren’t there enough real problems in our country and the world that need to be solved without name calling? I don’t think it will helps in any endeavor to find the best leaders and problem solvers to tearing each other apart in petty name calling.

I am a member of the Church of Jesus Christ of Latter-Day Saints (Mormon Church). Here are some of my personal thoughts on the subject. I offer them, not so much to disprove any critic, but because I want it to be clear who I follow.

Do I believe in Christ? – Yes, Jesus Christ is central to my faith. Here are some items that support my view.

  1. The official name of the “Mormon” church is the Church of Jesus Christ 0f Latter-Day Saints. Please note that the name of Christ is central in the name of the church. As the name indicates, it is Christ’s church and fully dedicated to serving Him. The term “Mormon” was originally a pejorative applied to members of the Church of Jesus Christ of Latter-Day Saints that eventually was adopted as a nick name for the church.
  2. Our first and central Article of Faith is:

    We believe in God, the Eternal Father, and in His Son, Jesus Christ, and in the Holy Ghost.

  3. Most often the reason given to support that “Mormons” aren’t Christians is that they don’t support “historical Christianity”. I believe that this is a veiled reference to the doctrines of the nature of God expressed in the Nicene and other creeds of the  forth and fifth centuries. These doctrines appeared around 325, as an attempt to clarify christian beliefs. It is correct that Mormons don’t accept these creeds. A careful observer would realize that early Christians, those at the time of Christ and in the first two centuries following his death, didn’t believe in these either. They only appeared after the Apostles and others directly associated with Christ and having His authority to speak on doctrinal matters, were not longer on the earth. They are not found anywhere in the Bible. According to Harper’s Bible Dictionary, “the formal doctrine of the Trinity as it was defined by the great church councils of the fourth and fifth centuries is not to be found in the [New Testament].” I do not believe that these creeds represent the actual views of those most closely associated with Christ himself. Whatever one’s belief system, it’s hard to accept as a litmus test of another’s christianity, ideas that that Christ himself, the Holy Bible and those most closely associated with Him, did not subscribe to.
  4. Here are a couple of verses of scripture that I feel describe how strong we feel about the Savior:

    For we labor diligently to write, to persuade our children, and also our brethren, to believe in Christ, and to be reconciled to God; for we know that it is by grace that we are saved, after all we can do… And we talk of Christ, we rejoice in Christ, we preach of Christ, we prophesy of Christ, and we write according to our prophecies, that our children may know to what source they may look for a remission of their sins.

    They come from The Book of Mormon, a volume dedicated to witnessing that Jesus is the Christ.

  5. The best place to find out the church doctrine on Christ  is on mormon.org
Do I have malice or ill will toward any other faith? – No, absolutely not. Again, there are 13 basic statements of belief called the Articles of Faith. Here’s number 11:
We claim the privilege of worshiping Almighty God according to the dictates of our own conscience, and allow all men the same privilege, let them worship how, where, or what they may.
Respect for the beliefs of others is central to my core belief that all people are children of a loving God and their free will is of paramount importance to our common Heavenly Father. I don’t believe that a loving God sanctions men for their faith or wants them to suffer in hell because of doctrinal differences. I do believe that He want’s each of us to have as much light and knowledge as we are willing to accept. I find value and believe that I can learn much from the religions and philosophy of others.
I do believe -
  • The Savior came to earth to draw all men to him and that he is no respecter of persons or privilege. His love and reach is broad enough for all mankind.
  • His central message was peace and love for God and one another. He is deeply disappointed in us when, by word or deed, we harm each other.
  • Christ suffered for my sins, along with all of humanity, and I owe Him everything as my personal Savior.
  • The best way I can serve Christ is to care for my fellow man; when, where or how ever I find him.

1 Comment

Filed under Uncategorized

Black and White Film

Since I don’t have a darkroom setup shooting black and white film has been quite a bit more inconvenient. It has to go out to the lab – shipping, waiting, etc…

I recently tried some Kodak B&W film that can be processed in C-41 chemicals. It seems to have worked out fairly well. I picked up a couple of rolls at Walgreens or you can get it from Adorama.

The processing was done by Walgreens in about an hour, cheap and quick. The results had a bit lower contrast than I’d like but, Apeture was able to quickly remedy that issue. I’m not sure if it’s the film or the scanner operator to blame. It’s pretty easy for me to see the operator, being used to color neg., staying with some pretty low contrast. It responded to being under-exposed well, although the grain comes up. I don’t mind the grain and in some shots it adds to the mood. I’ve put some of the shots on Flicker and a couple below.

 

Leave a Comment

Filed under Photography

Getting started again

It’s been a while since this site was up. Mostly a result of my not getting things moved after the hosting provider moved me to an upgraded server. I’ve installed WordPress and found what I believe is a pretty good theme. All in all, it only took about 1/2 hr. to get setup. After saying that, not getting it done sooner sounds all the dumber.

Leave a Comment

Filed under Uncategorized