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Archive for December, 2018

It has been a year and a half since we visited our son in Pennsylvania. I felt like I made more connection this time with the grandchildren than previously. We have forgotten how much energy young children expend and parents expend on their behalf. We sword fought, colored, cooked, ate, cleaned and organized, worshipped, ran around in two different yards, shopped, read, ate, recalled, sang, ate, talked, watched film, prayed, ate, played croquet, and cleaned some more.

Two of my younger sons were there for the first evening dinner. I would so like to get the whole clan together in one place, at one time. It is good to see the young ones healthy and happy. I think that their parents are tired. Many changes are coming.

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A Stance and Grip on Life Ready for Growth

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My Kitchen Is My Happy Place

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I took two walks and a run while I was there. A walk down by the nearby creek occurred when all seven of the other people were napping. I wonder if the woods, creeks, and fields have always felt so lonely in the winter, or did we eliminate so many mammals as to make it so. I don’t mind alone, because it gives me time to process, meditate, consider, and request. I also observe much better when I have un-rushed time alone.

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The Quiet, Melancholy of a Winter Riparian Scene

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Natural Impressionism

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Late Evening Winter Scene

We stayed in an airbnb all four nights. I discovered them this year because of increased travel and motels being a bit expensive for what you get. In someone’s home you have the option to cook, which both saves money and allows for eating what you want to eat. The first night we stayed in a very nice home, beautifully decorated with an inquisitive couple who would have talked into the wee hours if I had allowed it. The next three nights we stayed in a clean but very sparsely decorated older home. We hardly saw the host and had the two story house to ourselves for the little time we spent there. It was from this second home that I took a walk at dusk on the second night. I had to include the poor picture of the falcon sitting on the fence post. It was not more than 30 yards away. The small towns there are surprisingly compact. There were probably not more than 20 houses with a volunteer fire station, an auto repair shop, and a few small business warehouses. You could walk 200 yards from the middle of town in any direction and be in a farmer’s field.

I’m sure locals could tell at a glance, but just because you see a buggy doesn’t mean the occupants are Amish. Many are Joe Wenger, 35er, or Piker Mennonites. What is generally conservative in religious circles elsewhere is moderate to liberal in Lancaster County. 

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Bad Picture, Amazing Sight

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Mastersonville, PA

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They do have running lights and headlights

We came home tired and satisfied. Time with family and time in a new place are refreshing to the spirit and mind, even if not so much to the body. God has so blessed us with children who seek Him and occasional opportunities to break up the mundane with new experiences. Life is good, because God is good.

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There is so much stirring in my heart and mind.

Before prayer time the pastor read about the two houses, one built on the rock and the other on sand. Having a good foundation in God and in His Word is important. But pastor pointed out that the foundation in no way determined what was thrown at the house. Both houses experienced severe storms. Christians and devoted Christians do not get an easier life. In fact, “all who desire to live godly in Christ Jesus will be persecuted.” ( II Timothy 3:12) The house cemented to God lasts.

My class’s Sunday School lesson was on David and Goliath. I liked the fact that the lesson emphasized that this was not a boy fighting a giant, but a young man described as a “valiant warrior” (I Samuel 16:18). Nonetheless, any thought of him defeating this giant on his own was beyond anyone’s imagination. All of the army of Israel fled from his presence and were terrified. When David told Saul that he had defeated the lion and the bear, he was insistent that “The Lord who delivered me from the paw of the lion and from the paw of the bear, He will deliver me from the hand of this Philistine.” (I Samuel 17:37) The rest of Israel was afraid while David trusted God. My concluding point was that “You overcome giants like [I had the students fill in the blank and then I added only a few more] fear, bullies, my worst subject in school, pain, disease, conflict with family or friends or enemies, death, the devil, my sinfulness, embarrassment, weakness by trusting in God.”

Then my pastor preached on prayer in the book of Acts. He surveyed the occurrences of prayer and their results. If my notes record correctly, he numbered 19 instances of prayer. There were many kinds of prayer: worship, praise, petition, devoted, focussed, decision, pleading, requests, commissioning, singing, committing, exhorting, meditating, seeking, fasting. These prayers had many results: divine guidance, many saved, miracles, healings, provision, rescue, preaching, Holy Spirit empowerment, conflict and its resolution, persecution, rebuke, dead raised, blind given sight, understanding, discernment, calling missionaries, elders chosen and confirmed, church planted, priests saved, testifying, praise, earthquake, jailer saved, commitment, strengthening of the church, supplied. Then the pastor asked, “Will you give yourself to prayer?” He concluded by saying, “A life of prayer doesn’t mean that we do nothing, but that we do nothing apart from prayer.”

The devotion and lesson and sermon reminded me of a thought I had many times before about the work of a Christian. “The only true work of a Christian should be prayer; all else is rest.” I don’t mean by this that muscles and sweat and planning and thought aren’t involved in many activities for the kingdom of God. Rather, we plead and travail and petition and worship and fast and cling to God in prayer and then go out confidently to the battle to meet the giants, expectantly and confidently looking for how God will work. The upshot of this day of thought on God and His ways is that I have much work to do. I would describe my prayer life as sporadic. I do fervently pray even when things are going well, but I get distracted by many pursuits and cares rather than resting in God from a position of having requested His power in prayer. Will you come along with me to renewed commitment to prayer? Ourselves, our families, our churches, our communities and businesses, our nation, and our world need prayer.

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It was not a record snow. Those seem to be more in the neighborhood of 18″ in 1993, the 1960’s, 1925, 1911, or something, depending on whether you mean 24 hour total, storm total, and where exactly. Tracing such records is dizzying and hard to do. But a solid 14″ on the hard surface of my yard where there is gravel and scant, short grass is good enough for me.  I have a picture of it when it was 13″, because the 14″ measurement picture was blurred by condensation on the lens.

I think that one of the changes with age is my way of enjoying the snow. Some people don’t really seem to enjoy it unless they are sliding on it. I, too, used to love to do that on anything slick: sled, shovel, skis, shoes (boots really, but I couldn’t resist 5 s’s in a row).

But now I like most of all to take a long walk to the point of fatigue and take pictures of anything that looks beautiful or unique. I find much peace and exhilaration mixed together when it is snowing. It is quiet and yet screams at the senses, bright and yet darkly overcast, beautifully sculpting and yet messy, sanguine and yet melancholy. The wind, flakes, and sound absorption isolate you and yet your neighbors come out to greet you and lend a hand if you are stuck.

I apologize to my friend whose picture I took, twice. It seems that the snow flake that I did not see and obscures part of the clock was inconveniently on his face moments later. I walked 2 miles over to his apartment and then we walked a mile back up into town. We are both school teachers and don’t have anywhere we have to be at the moment.

I am thankful to God for hearing my prayer for it to not rain last night, since that would have certainly caused significant flooding. It melts away slowly today, running down the gutter at the bottom of my driveway. It was a beautiful, big snow.

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The Homeplace draped in liquid lace

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It’s hard to keep firewood dry.

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I had a better picture of this, but the flash reflecting off of the snowflakes was a pleasant surprise.

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It really was 14, later.

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Wind Sculpting

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Nice contrasts

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Working hard for a day off!

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Companionship is always good.

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It looks intense.

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Good architecture shines even when covered.

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In a small town near you

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Iconic, Historic Courthouse

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Go, but not too fast

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No one in attendance this week

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I forgot to tell him to turn off the flash.

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Snowtime

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“I moved down from Wisconsin to get away from this.”

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We have a few pieces of snow equipment in our small, Southern town.

Decorated Snowy Lightpole

Pass Go, collect $200, and have a Merry, White Christmas.

 

 

 

 

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Heat acts like an invisible fluid that washes over and penetrates through any barrier. The reason I thought about it this morning was the temperature in the house, the difference in temperature from outside, and the feel (comfort level) in the house.

The thermometer, placed on the counter in the center of the house, said 68 degrees, which is a reasonable indoor temperature. But should I start a fire in the stove? Ultimately, for most people, the answer to that question depends on comfort level. Ignoring the real psychological components of comfort level, comfort level depends on heat flow rate.

Heat flow rate is the reason for heat index and chill factor in weather reporting of temperature. An inanimate object feels neither extra hot when it is humid nor extra cold when the wind is blowing. The temperature at which it settles is determined solely by the average rate of vibration of its molecules (i.e. temperature). 

But when an object like a thermostated heater or warm blooded mammal or human is warmer than its surroundings and produces heat to maintain that difference, heat flow rate is crucial to comfort and even survival.

For a fuller understanding of this concept. let us posit two facts:

  1. Heat always flows from warmer to cooler.

  2. Heat Flow Rate is     Screen Shot 2018-12-08 at 6.05.10 PM,

where Q is heat, t is time, K is conductivity, dT is change in temperature, and l is length (distance or thickness) of heat flow, and the combination of dT/l is the temperature gradient.

Since in winter I heat with wood for the purpose of keeping us warm and feeling warm, I will consider the situation of heat flowing out of our bodies. Unless I am sitting by the woodstove, I am warmer than the room and heat is leaving me.

The greater the area (A) of my skin exposed to the surroundings, the faster I cool off. For this reason, you don’t expose flesh to the air on an extremely cold day because the heat flow rate is so great from any area of  your body that it can’t provide enough heat to prevent your flesh from freezing.

The greater the temperature difference (dT) between me and the environment cooling me, the faster I cool off. Our bodies are constantly radiating heat to the cooler surroundings. If you have ever worked in an unheated building with a concrete floor, you know that it is very hard to keep warm. You can feel the concrete zapping heat out of you (you radiating to it, in fact).

The shorter the distance (l) for the heat to flow to reach the cooler temperature, the faster I cool off. The thickness is the reason thicker insulation works better. More thickness of a substance that slows heat flow rate slows it more. Insulation, be it pink or down or quilt is really just a function of how much non-convecting air is trapped in the insulating layer. Air is an excellent insulator, which brings us to the next component.

And the better the material is at conducting heat (thermal conductivity (K)) off of me, the faster I cool off. Conversely, the reason air is poor conductor of heat is the distance between molecules. On the other hand, since it is a fluid, it is a decent convector (heat transfer by flow of a fluid), and it provides little resistance to radiation, since there is less matter than most materials to absorb or radiate back the heat. When you put a warm hand on a cold, wooden table it won’t feel very cold, but on a cold, metal appliance it will. This increased flow happens because the metal has a far greater thermal conductivity than an insulator like wood.

Soooooo, back to my question. Should I start a fire when the core of the house is 68 degrees? Considering this situation, I ask myself several questions. What is the temperature outside? Is there a strong wind cooling the house? Is there cloud cover to prevent cooling at night or prevent warming during the day? Is there a temperature trend up or down from the present reading of 68 degrees because of internal or external changes to the house? About this time, those of you who have thermostats that do all of this “thinking” for you should stop taking it for granted. It is a relatively old technology, but not an altogether simple or trivial one.

In terms of comfort level, it can be 68 degrees in the core of the house and feel quite chilly because the outside is removing heat rapidly. This situation will result in the peripheral (near the outside walls) temperature being several degrees cooler.  I used to have my indoor/outdoor thermometer on a window sill. It consistently read cooler than the one I have now. My new thermometer wouldn’t fit on the sill. It would probably be easier to not think about it if I had a thermometer in the center of the house and on the window sill. Then I would have an approximation of the heat flow rate out of the house, but that would make me less truly aware of my surroundings. I have to walk past the central thermometer and past the window to get to the refrigerator and the stove to make my breakfast anyway, so I feel the temperature difference from core to periphery. I do not, however, usually think much about the various components of heat flow rate, because I am only barely awake at 5:15 in the morning.

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Not time for a fire, yet (I need to reset the clock.)

P.S. If you read this far, I surmise that you are either a science geek or a particular friend. Either way, thanks for reading, and glory to God for His ordered universe and minds to make sense out of it.

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I was out of town last week, so I hadn’t gotten the new Sunday School curriculum. I decided to piggyback off of the lesson my pastor had taught the children last week about God choosing David as king. What else did he choose David for? Prophet, Warrior, Psalmist. All of these are true but His choice of David as progenitor of an eternal dynasty  is most important.

Here is how it played out. I had the students do a Bible drill and read passages about 4 covenants of God. God made other covenants not mentioned here, most notably the Adamic and Noahic, but these four represent much of the focus of the Old and New Testament (i.e. Covenant) passages. The table and preliminaries don’t copy over quite the same as they appear on the student’s worksheet, but you get the idea:

Four Great Covenants of God

God chose _______________ to be _________, in place of ____________.

There are two points: 1) He was a man ___________________________ (Acts 13:22)

2) God desires from us ______________ and _______________ and _______________

(I Sam 15:22; I Cor. 1:27)

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From last week’s lesson, God chose David to be king, in place of Saul.

The two points of the previous lesson were 1) He [David] was a man after God’s own heart.  2) God desires from us obedience and humility and integrity.

Following is a picture of how I outlined the Covenants as the students read through them:

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My son and I had a conversation nearly 2 months ago now about the most influential people in the world. I do not remember what precipitated the discussion, but it was not in a vacuum. When he was young our family had watched an A&E program named “The 100 Most Influential People of the Millennium”. It began with #100 and built up as they approached their #1 pick for the years 1000 to 2000 A.D. (If you want to see the list, click here. And if you are not really interested in my commentary but want to look at my list, scroll to the bottom.) After much discussion, my son suggested that we challenge the extended family, with whom we would be gathering in a little over a month for Thanksgiving, to make their own lists so we could discuss it after dinner. The A&E list is ranked and we said that each person could decide if they wanted to do that. Additionally, we purposely stated that each person should interpret what kind of influence, who was influenced, and when they were influenced, in making his/her list. I wrote these things in an e-mail to the family e-mail group, not mentioning the A&E list but admonishing participants to not confer with others so that the lists would be more varied and produce more discussion. When I saw the good-hearted discussion on the e-mail replies, I took the additional step of asking two colleagues at my work, who I knew to have different worldviews than my family, to make their lists for the purpose of contrast.

I am happy to say that the whole scheme brought about significant discussion. It was interesting to watch the phases of interaction. After a brief explanation on my part as to how the challenge had occurred, with inclusion of the A&E list, family members began comparing who was on most lists. Next there was a discussion of the rationale behind various member’s lists (more about that in a moment). Then we progressed into names we supposed to be possibly unique to our own lists, asking others if they included them, and if not, why not. It occurred to me that in order to make a really good list you would need a plethora of perspectives. I made the mistake of mentioning that this procedure would work best in a committee. There were some of the strongest opinions about the pitfalls of committees, like slow and argumentative, but they also have the advantage of collaboration and consensus. Since the whole of this blog entry is commentary, I would also add that collaboration is an overused buzz-word and politically correct requirement of public interaction these days. Frequently, isolated, deep contemplation, followed by sharing is more efficient and brings better results, but woe be unto the educational ‘facilitator’ who broaches that perspective.

The rationales for selecting candidates for the 100 lists varied with as many people as participated. My oldest son, who completed his list mostly in his head while working, stated that he did not know enough about the East and confined his list to people who influenced Western Culture. He also said that most lists would not sufficiently include the influence of Christians for now and eternity, so his list is heavy (not meant to imply too heavy necessarily) on Christians. He also said that he had trouble limiting his list to 100 people so his first list had 211. Actually it had more than that because in certain listings he put multiple names, for example the founding fathers of the U.S. His brother added accomplishments onto his list, persuaded him to reduce his list to 200, but then added 25 he thought his brother had left out. It was a collaboration within the individual lists.

I also found mulitple listing unavoidable on some subjects so that I have Watson and Crick for DNA, and Wilbur and Orville for the airplane. But I opted to try to find one revolutionary idea or execution of an idea as representative of a thought or influence, for example, Philo Farnsworth invented the scanning television. His was not the very first or the exact one that number in the millions by the time I was a child, but he broke ground toward a practical, modern TV. I also tried to include significant people from the East. I too am largely ignorant of the East, but I think that it helps tremendously that we were limited to 1000 to 2000 A.D., because many of the formative, significant names in the East are more ancient. For all of this, it is curious that we chose to emphasize what affected our culture, our time, and ourselves the most. Compared to the A&E list, I think we were more far-reaching and inclusive than they were. Some of their picks were simply politically correct, narrowly influencing idealogues and icons of cultural fad. It is good to realize that you are being narrowly focussed on what surrounds you, but be more inclusive tends to adding people that were not really influential, just an influence on some small group you don’t want to leave out.

The chore of ranking these people was the hardest part, and I gave up after #31, because it began to seem ridiculous to me. The whole exercise of ranking may be equally so. I did find it much easier to rank within groupings of types of influencers, for example, spiritual, inventors, scientists, leaders and politicians, literature and the arts, and philosophers. And this is the list I have included below.

I found the whole process stretching, challenging, and enjoyable, with the discussion with family particularly so. If you have a few minutes, peruse my list and give some feedback on why you think certain people should or should not be on my list. Happy listing.

Leon’s Most Influential People of the 1000-2000 AD  (ranked within Groupings)

Spiritual Leaders

  1. Martin Luther (started the Reformation)
  2. John Calvin (Reformer and Theologian)
  3. William Tyndale (English Bible)
  4. Hudson Taylor (Missionary to China)
  5. Billy Graham (Worldwide Evangelist)
  6. George Whitfield (Early American Evangelist)
  7. Charles Spurgeon (Prince of Preachers)
  8. Luis Palau (Latin American Evangelist)
  9. John Wyclif (English Reformer)
  10. Mahatma Gandhi (Indian Holy Man)
  11. Ignatius Loyola (Jesuit founder)
  12. Mother Teresa (Nun to poor of India)

Inventors

  1. Johannes Gutenberg (Moveable Type Printing Press)
  2. James Watt (Inventor of the Steam Engine)
  3. Thomas Edison (Inventor)
  4. Guglielmo Marconi (Wireless)
  5. Jean Joseph Etienne Lenoir (Internal Combustion Engine)
  6. Orville and Wilbur Wright (Airplane)
  7. Henry Ford (Assembly Line, affordable car)
  8. Werner von Braun (modern rockets)
  9. Henry Bessemer (economical steel process)
  10. Charles Goodyear (Vulcanized Rubber)
  11. Alfred Nobel (High Explosives; Nobel Prize)
  12. G. LeTourneau (Earth Moving Equipment)
  13. Christiaan Huygens (Pendulum Clock)
  14. Bartolomeo Cristofori (Piano)
  15. Jacques Cousteau (Aqualung, ocean preservation)
  16. John Bardeen, Walter Brattain, and William Shockley (Transistor)
  17. Alexander Graham Bell (Telephone)
  18. William Cullen (Refrigeration)
  19. Theodore H. Maiman (LASER)
  20. Philo Farnsworth (Scanning TV)
  21. Bill Gates (Software Developer)
  22. Alexander Parkes (Thermoset Plastic)
  23. Daguerre (Photography)
  24. George Washington Carver (Agriculture)

Scientists

  1. Isaac Newton (Laws of Motion and Gravity)
  2. Michael Faraday (Electromagnetism: motor)
  3. Albert Einstein (Relativity)
  4. Charles Darwin (Evolution)
  5. Louis Pasteur (Germ Theory and Vaccination)
  6. Gregor Mendel (Genetics)
  7. James Watson/Francis Crick (DNA)
  8. James Clerk Maxwell (Electromagnetic Equations)
  9. Galileo Galilee (Motion and Astronomy)
  10. Johannes Kepler (Elliptical Orbits)
  11. Nicolaus Copernicus (Heliocentric Solar Sys)
  12. Rene Descartes (Philosopher, Mathematician, Scientist)
  13. Roger Bacon (Sci.Method, gunpowder to West)
  14. Dmitri Mendeleev (Periodic Table of Elements)
  15. Niels Bohr (Atomic Model/Quantum Mech)
  16. Edward Jenner (vaccination)
  17. Alexander Fleming (Penicillin)
  18. Pierre and Marie Curie (Radioactivity)
  19. William Harvey (blood circulation)

Government/Political Leaders

  1. William the Conqueror (Conquered Britain)
  2. Mao Zedong (Chinese Communist Revolution)
  3. Suleiman The Magnificent (peak of Ottoman) 
  4. Gustav II Adolf (Supported Protestant States)
  5. George Washington (General/President)
  6. Genghis Khan (Mongol Empire)
  7. Adolf Hitler (Nazi Germany)
  8. Simon Bolivar (Liberator of South America)
  9. Pol Pot (Mass murder in Cambodia)
  10. Queen Elizabeth I (Queen of England)
  11. William Wilberforce (Ended Slavery in Britain)
  12. Napoleon Bonaparte (Defeated Europe)
  13. Vladimir Lenin (Russian Revolution)
  14. Peter the Great (Modernized Russia)
  15. Thomas Jefferson (Declaration of Independence)
  16. Fredrick the Great of Prussia (Peak of Prussia)
  17. Mustafa Ataturk (Liberalization of Turkey)
  18. Abraham Lincoln (Civil War)
  19. Martin Luther King Jr. (Civil Rights Movement)

Explorers

  1. Christopher Columbus (rediscovery of New World)
  2. Marco Polo (European trade with China)
  3. Ferdinand Magellan (Explorer)
  4. Hernan Cortes (Conqueror of Aztec Mexico)
  5. James Cook (Explorer)

Literature, Music and the Arts

  1. William Shakespeare (Playwright, Writer)
  2. John Bunyan (Pilgrim’s Progress)
  3. John Milton (Paradise Lost, Writer)
  4. Johann Sebastian Bach (Baroque Composer)
  5. Dante Alighieri (Divine Comedy)
  6. Leonardo da Vinci (Inventor, Sculptor, Painter)
  7. Charles Dickens (Novelist)
  8. Michelangelo (Painter/Sculptor)
  9. Wolfgang Mozart (Composer)
  10. Ludwig van Beethoven (Composer)
  11. Fyodor Dostoyevsky (Writer)
  12. Leo Tolstoy (Novelist)

Philosophers

  1. Thomas Aquinas (Christianity &Greek thought)
  2. Carl Marx (Marxism)
  3. John Locke (Social Contract)
  4. Sigmund Freud (Psychoanalysis)
  5. William Blackstone (Law)
  6. Immanuel Kant (Transcendentalism)
  7. Soren Kierkegaard (Existentialism)
  8. Jean-Jacques Rousseau (Political)
  9. Friedrich Nietzsche (Nihilism)

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