Adventures in solar cooking

Yesterday in Sunday school, two groups of kids started making solar ovens. While they were working, we had solar s’mores cooking in the solar oven I made on Saturday. However, it took a long time for the solar s’mores to cook. First problem: the morning clouds didn’t begin to clear until halfway through Sunday school. Second problem: thin clouds persisted most of the morning, and even the thinnest of clouds caused the temperature to drop at least ten degrees inside the oven. We started cooking the s’mores at about 10:00, and they weren’t really done until just before noon — after most of the kids had already gone home.

The clouds finally cleared away completely, and I left the solar oven outside my office for several hours in the early afternoon. The inside temperature rose to over 200 degrees Fahrenheit (200 degrees is as high as the meat thermometer goes), with outside air temperature in the high 70s. I heated up a mug of water, to over 170 degrees, and made a nice cup of tea. While I was making tea, Fred Z., from the Green Sanctuary Committee, stopped by and suggested trying cast iron cookware in the oven — it’s dark and absorbs heat well, plus it provides a good thermal mass to even out cooking temperature.

So this morning I dug out a small cast iron frying pan, and decided to try cooking a fried egg in the solar oven. The air temperature was about 65 degrees, but in spite of clear skies I couldn’t get the inside temperature over 190 degrees — which suggests I need better insulation in the oven. I cooked a fried egg, over easy:

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It took about twenty minutes, and was really more of an egg baked in butter than it was a fried egg (it tasted good, though); obviously there is a lot more to be done to improve the efficiency of the oven.

Solar oven prototype

Tomorrow, the middle school ecojustice class in Sunday school is going to make solar ovens. So of course I had to make a prototype:

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I started with a basic design made out of carboard boxes, a design that is sometimes called the “Minimum Solar Box Cooker.” But instead of just nesting one smaller box inside another box, I took the smaller box, cut out the ends, and turned it 45 degrees:

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While this reduces the amount of cooking space inside the oven, it also reduces the amount of air that has to be heated. And then, too, it’s easy to run a couple of dowels through the inner box to make a support for a cooking pot.

In preliminary tests, the oven worked reasonably well. I set the oven out at 2:45 p.m., stuck a meat thermometer in one end of the oven, and within twenty minutes, the thermometer was reading between 190 and 200 degrees F. (the thermometer only goes up to 200). At about 3:10, I put in a cup of water in a glass container. By 3:40, the water temperature was 155 degrees F., and the glass container was more like 190 degrees F. (Air temperature is 75 degrees F. this afternoon.)

Tomorrow comes the real test: we’ll set the oven out at the beginning of Sunday school and see how quickly we can make solar s’mores.

Update, one year on: This solar oven prototype proved to be only marginally effective. After using it fairly extensively, it has one big problem: when you open the lid, much of the hot air escapes; there is very little thermal mass, aside from the heated air. At the very least, I need to provide a significant thermal mass (preferably black in color, to better absorb heat). In addition, it would make sense to place the door low on one side of the oven, to minimize the loss of heated air.

Happy Labor Day

To cheer you up on Labor Day 2014, here are some reports on labor issues from various sources:

Yesterday, the San Francisco Chronicle pointed out that most tech companies in the Bay Area neither support nor oppose the proposal to raise the minimum wage in San Francisco, because they don’t bother hiring minimum-wage workers in the first place: “Large tech companies, whose workers make an average of $156,581, are mostly indifferent on the issue. They employ few minimum-wage workers, often contracting low-wage positions to outside providers.” [“Low-paying jobs may get a boost,” San Francisco Chronicle, August 31, 2014, p. D1]

Today, an editorial in the San Jose Mercury-News bemoans the disappearance of the middle class. The editors reminds us of the recent news that, to no one’s surprise, tech workers are overwhelmingly male, and white or Asian. Then the editors go on to report that a recent study by Working Partnerships USA, a San Jose organization, found that there is plenty of racial and gender diversity in the maintenance and support staff of Silicon Valley companies: “The ethnic and gender divide parallels the economic divide: the service workers make a fifth of what tech workers make.” [“Middle class’ demise needs our attention,” San Jose Mercury-News, September 1, 2014, p. A11]

Finally, I am reading Oriented to Faith: Transforming the Conflict over Gay Relationships by Tim Otto, a member of the Church of the Sojourners, an intentional Christian community in San Francisco (no connection to Jim Wallis’ Sojourners Magazine). The fifth chapter of Otto’s book is devoted to a theological reflection on how our current economic principles impact our families. He writes: “Consumer capitalism undermines the family by:
“1. Giving us less incentive to create strong families.
“2. Promoting [geographic] mobility, which weakens support for the family.
“3. Training us to see ourselves as consumers and other people as products.”

And if this kind of thing — the demise of the middle class, the sexism and racism of the big tech companies — makes you feel bad, might I suggest that you should go out and buy more consumer goods, which will help keep those low-wage workers in China fully employed. Happy Labor Day!

20 years

Twenty years ago this month, I began working as a Director of Religious Education (DRE) in a Unitarian Universalist congregation. During the recession of the early 1990s, I had been working for a carpenter/cabinet-maker, so I had been supplementing my income with part-time work as a security guard at a lumber yard. Carol, my partner, saw an advertisement for a Director of Religious Education at a nearby Unitarian Universalist church. “You could do that,” she said. So I applied for the job, and since I was the only applicant, I got it.

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Above: Carol took this Polaroid photo of me sitting at my desk at my first DRE job. The computer in the left foreground is a Mac SE, and I have a lot more hair. It was a long time ago.

Over the past twenty years, I worked as a religious educator for sixteen years — full-time for six of those years, part-time for nine years — and as a full-time parish minister for four years. Since I was parish minister in a small congregation where I had often had to help out the very part-time DRE, I feel as though I’ve worked at least part-time in religious education for twenty continuous years.

Sometimes I wonder why I’ve stuck with it so long. Religious education is a low-status line of work. Educators who work with children are accorded lower status in our society, because working with children is “women’s work,” and ours is still a sexist society. And religious educators are sometimes looked down upon by schoolteachers and other educators, because we’re not “real” educators. In addition to being low-status work, religious educators get low pay, and the decline of organized religion means our pay is declining, too, mostly because our hours are being cut, or paid positions are being completely eliminated.

Continue reading “20 years”

Persephone and the myth of winter

Usually, the myth of Persephone spending one third of the year in the underworld is supposed to explain why we have winter. But the climate in Greece is very like the climate in parts of California — winter is the rainy season, when the earth is green, and plants are growing. Martin Nilsson makes this point in his book Greek Popular Religion (New York: Columbia University Press, 1940), p. 51:

“For people who live in a northerly country, where the soil is frozen and covered by snow and ice during the winter and where the season during which everything sprouts and is green comprises about two thirds of the year, it is only natural to think that the Corn Maiden [Persephone] is absent during the four winter months and dwells in the upper world during the eight months of vegetation. And, in fact, this is what most people do think. But it is an ill-considered opinion, for it does not take into account the climatic conditions of Greece. In that country the corn [i.e., grain: barley or wheat] is sown in October. The crops sprout immediately, and they grow and thrive during our winter except for the two or three coldest weeks in January, when they come to a standstill for a short time. Snow is extremely rare and soon melts away. The crops ripen and are reaped in May and threshed in June. This description refers to Attica. The climate is of course different in the mountains, but Eleusis is situated in Attica. The cornfields are green and the crops grow and thrive during our winter, and yet we are asked to believe that the Corn Maiden is absent during this period. There is a period of about four months from the threshing in June to the autumn sowing in October during which the fields are barren and desolate; they are burned by the sun, and not a green stalk is seen on them. Yet we are asked to believe that during these four months the Corn Maiden is present. Obviously she is absent….”

And as I look out at the summer California landscape, where the hillsides are brown and dead-looking (especially this year, after three years of drought), I have to say it would make more sense that Persephone would be in the underworld right now, not in winter. In any case, although Nilsson’s book is a bit dated now, he reminds us that when the ancient Greeks thought of winter, they were not thinking of the stereotypical North American idea of winter, a time of snow and ice and cold.

But if this is not a myth about why it snows in winter, then what is it about?

Dr. Mara Lynn Keller, currently professor of women’s spirituality at the California Institute of Integral Studies, offers a feminist interpretation of the myth. Dr. Keller asserts that the myth of Demeter and Persephone focusses on “three interrelated dimensions of life: (1) fertility and birth; (2) sexuality and marriage; and (3) death and rebirth” (“The Eleusinian Mysteries of Demeter and Persephone: Fertility, Sexuality, and Rebirth,” Journal of Feminist Studies in Religion, spring, 1988, vol. 4, no. 1, p. 31). Keller states that there is evidence to show this myth is an allegory of the role of women in developing agriculture:

“Some archaeologists and anthropologists conclude that plant domestication and thus the gift of agriculture came through women. This theory is corroborated by the mythic core of the Eleusinian Mysteries, where Demeter is said to give the gift of grain to the people and instruct them in the rites to be continued in her name.” (ibid., p. 31)

Further, Keller identifies Hecate as a grandmother figure, so the myth also is about cross-generational bonds: “The story of Persephone, Demeter and Hecate lets us see the loving bonds of daughter, mother, and grandmother. During the epoch of the Goddess religions, women were honored at all stages of life.” (ibid., p. 39) It is a story that started out as an allegory of the cycle of life. Later on, as patriarchal cultures moved in and conquered the older Goddess-worshiping matriarchal cultures, women were relegated to a secondary role. That would imply that this myth comes from that later patriarchal era, when a male god can force a female goddess into marriage — violating in the process those cross-generational bonds — without her consent or even prior knowledge.

This feminist interpretation of the myth has been hotly debated, and some scholars argue that the archaeological evidence does not fully support such an interpretation. Whether or not that is the case, this myth offers plenty of fodder for examining gender roles and the ways women may be dominated by men.

There are, of course, plenty of other interpretations. Dr. Eric Huntsman, professor of ancient scripture, classics and Ancient Near Eastern Studies at Brigham Young University, summarizes some of the better-known interpretations of this myth in his lecture notes to Classical Civilization 241 (accessed 13 August 2014). Dr. Huntsman says this myth could be interpreted as:

— a myth related to the establishment of the Eleusinian Mysteries
— a nature myth about seed growth, and rebirth: Demeter allows no seeds to sprout on earth, when Persephone eats a seed she must return beneath the earth
— a myth about gender roles: females must struggle to define themselves in a world run by males
— a psychological myth about a young woman and her mother adjusting to the young woman’s marriage
— a psychological myth about a young woman growing up and figuring out her sexual identity

In short, this myth is not some pre-scientific attempt to explain why there are seasons!

I would like to suggest that there is at least some truth in several of these interpretations. Like a good poem, this myth contains multiple layers of truth and meaning, and these layers do not reveal themselves right away. Perhaps it is best that the layers of meaning reveal themselves slowly, over time. Emily Dickson could have been talking about the myth of Demeter and Persephone when she wrote:

Tell all the truth but tell it slant —
Success in Circuit lies
Too bright for our infirm Delight
The Truth’s superb surprise
As Lightning to the Children eased
With explanation kind
The Truth must dazzle gradually
Or every man be blind —

[poem #1263]

“Excellence in Teaching” handouts

I’m currently leading a workshop called “Excellence in Teaching” at the Lifespan Religious Education Conference, held at Star Island Conference Center in New Hampshire. The class itself is experiential, and I won’t be able to translate it to this blog. But here are two handouts that may be useful to others:

Handout: Developmental stage theory for UU religious education

Handout: Multiple intelligence theory

Children and fantasy

Quote from yesterday’s New York Times, “Urban Legends Told Online” by Farhad Manjoo, p. B7:

“Jacqueline D. Woolley, director of the Children’s Research Lab at the University of Texas at Austin, has found that children are far more capable at distinguishing reality from fiction than perviously thought. ‘By the time they’re 9, they’re at adult levels,’ she said.”

That tallies with my observations of children in religious education settings. Children as young as 6 begin to be able to make distinctions between fact and fiction, and yes, by 9 years old they are probably at adult levels.

Pee on Earth Day 2014

Pee on Earth Day is an annual holiday designed to remind us that we are an integral part of the water cycle. Pee on Earth Day is celebrated on the first day of summer (June 21 for the northern hemisphere), since it is likely to be warmest then, and we don’t want to freeze any delicate bits.

I just celebrated Pee on Earth Day. It is somewhat challenging to do so in an urban setting. Let’s just say I waited until dark, and now there is a very happy plum tree.

Peacemaking and the REA

I just learned that the “Call for Papers Committee” of the Religious Education Association (REA) has accepted my proposal to present a workshop on our Peace Experiments program at the annual REA conference in November, 2014. The REA is an international, interfaith association of scholars and practitioners of religious education — it’s exciting that this prestigious association is interested in what our UU congregation has been doing with Peace Experiments.

While I’m all too well aware of the weaknesses of our “Peace Experiments” program, I think what we’re doing does have some interesting features. In particular, while most of the peacemaking curricula that I know about these days tend towards an essentialist educational philosophy (i.e., there are certain essential peacemaking skills that children must learn), our peacemaking program is grounded in an existentialist educational philosophy: we are trying to get children to define themselves as peacemakers, and to help them realize that who they are and the choices they make will shape the world around them.