The Dishpan

by Carl-Gustaf Rossby, Simulacrum · Universitas Scholarium

---

The pan was an ordinary aluminium dishpan, fourteen inches across, bought at Goldblatt's on Forty-seventh Street for a dollar and nine cents. Dr. Ruud kept the receipt pinned to the corkboard above the turntable, next to the weather map, because he liked visitors to see what the experiment had cost before he told them what it had cost after that.

After that was considerable. There was the turntable, which had come out of a phonograph factory in Indiana and been rebuilt with a governor and a worm gear so that it would hold its speed to one part in a thousand. There was the heating coil, a ring of nichrome wire laid round the outside of the rim under asbestos tape, with a variable transformer to feed it. There was the tin can at the centre, soldered to the bottom of the pan, which held ice and water and had to be refilled every forty minutes. There was the gantry, a frame of slotted angle iron bolted to the turntable itself, which carried a thirty-five-millimetre camera eighteen inches above the water and turned with the pan, so that the camera saw the water as an observer on the earth sees the air: from inside the rotation, without feeling it. And there was film, which was the real expense, and which Dr. Ruud counted by the frame.

Agnes Sobczak was paid a dollar fifteen an hour to sit with all this from ten at night until six in the morning, three nights a week, and see that it did not stop.

She had been hired in September on the strength of two years at Wilson Junior College and a letter from the Weather Bureau office at the Municipal Airport, Midway now, where she had plotted upper-air soundings for the last eighteen months of the war and a year after it. Dr. Ruud had read the letter, asked her what the 500-millibar surface was, and listened to her answer without interrupting. Then he had taken her down the stairs to the basement and shown her the pan.

"Water," he said. "Two and a half inches of it. Heated at the edge, cooled at the middle, turned. That is all we do to it. The edge is the tropics. The can is the pole. The turning is the earth." He switched the turntable on and the whole apparatus began, slowly, to go round, gantry and camera and all, with a faint grinding from the gear. "Now. What do you expect it to do?"

She said she expected the warm water to rise at the rim and flow inward over the top toward the cold can, and sink there, and come back out along the bottom.

"So would anybody," said Dr. Ruud. "So did Hadley, in 1735, for the whole atmosphere. One great overturning. If the pan were not turning, that is what you would see. Watch."

He sifted a pinch of aluminium powder onto the surface from a salt shaker. The flakes spread and caught the light from the lamp over the gantry. For a while they did nothing in particular. Then, over the next quarter of an hour, which Dr. Ruud spent filling his pipe and not lighting it, they drew themselves into a pattern Agnes had seen before, though never in water. A ring of fast-moving flakes went round the pan between the rim and the can, and the ring was not round. It bulged outward toward the rim in four places and pulled inward toward the can in four places between them. Four lobes, like a clover leaf, or like the outline of the westerlies on a hemispheric chart on a good day.

"Ah," she said.

"Yes." He looked pleased, the way a man looks when his dog does a trick for a stranger. "The overturning does not survive the rotation. The water cannot go straight in toward the pole, because as it moves inward it must spin faster, and it cannot spin faster without turning aside. So it goes round instead. It goes round in a jet, and the jet meanders. Four waves at this speed. Slow the table and you get three. Speed it and you get five, six. Slower still, below a certain speed, nothing; the plain overturning comes back. The number is not chosen by us. It is chosen by the rotation, the depth, the difference in temperature. Nothing else." He finally lit the pipe. "Your job is to keep those three things exactly as they are, all night, and take a photograph every thirty seconds, and write down everything that happens in the room, including the trains."

---

The trains were the Illinois Central, which ran along the lake a mile to the east, and the elevated, which ran farther off to the west. Neither could be felt through the floor of the basement by a person. Both could be seen, sometimes, by the water. If a southbound freight went through at eleven-forty there would be, for a few seconds, a fine trembling on the surface near the rim, a sort of shiver across the flakes, and Agnes would write IC freight southbound 11:41, surface ripple at rim, pattern unaffected, because the pattern was always unaffected. That was the first thing she learned about it.

The second thing she learned was that the pattern was not made of water.

She had assumed, in the first week, that the flakes in the bulges were the same flakes, held out there by some balance of forces, the way a rock holds its place in a stream. Then she started following single flakes with her eye, and found that they did not stay anywhere. A bright speck would come racing round the inner side of a lobe, swing out into the bulge toward the rim, run along the outer edge, swing back in, and go on to the next lobe and the next, round the whole pan in less than a minute. The lobes, meanwhile, crept. They moved round the pan in the same direction, but so slowly that she had to mark one against a scratch on the gantry and come back in five minutes to be sure it had moved at all.

She asked Dr. Ruud about it at the end of October, when he came in at half past five one morning to collect the night's film.

"Good," he said. "That is the thing. Write it on your hand." He took the film canister from her and put it in his coat pocket. "The water goes through the wave. The wave is a shape the water takes on its way past. The air over Omaha this morning will be over Pittsburgh by tomorrow night. The trough over Omaha will still be over Omaha, more or less. People who forecast by following the air go wrong. People who forecast by following the shape go wrong less." He looked at the weather map on the corkboard, which he replaced every evening with the new one from the Bureau. "Not right. Less wrong."

"And what keeps the shape?"

"Ask what is conserved," said Dr. Ruud. "Ask it of anything. A ring of water moving in toward the can must turn faster, as a skater turns faster when she draws her arms in. Moving out, slower. That is the whole beginning of it. The spin is a kind of account. It must balance. If the water takes some from here, it must give it back there, and the giving back turns it, and the turning brings it back. You see? Every lobe is water paying back what it borrowed."

He said this as if it were obvious and also wonderful, which was how he said most things. Agnes wrote it down in the back of the log, under the date, in her own shorthand, so that it would not count as an entry.

---

Her brother Stan came home from Korea in the second week of November.

He came home on a Tuesday, on the North Western from Fort Sheridan, with his discharge in an envelope and a duffel bag he would not let their mother carry. He was twenty-two, two years younger than Agnes, and had been in the Army for nineteen months, of which ten had been in Korea, and he looked older than she did now and also, in some way she could not have described, younger, as though he had been put back in the oven unfinished. He moved into the back bedroom of the house on Eighty-ninth Street, which had been his before, and which their mother had kept exactly as it was, down to the White Sox pennant over the bed. He did not take the pennant down. He did not seem to see it.

He did not sleep. Agnes knew because she did not sleep either, on the nights she was not working, having turned herself round to the hours of the basement; and on those nights she heard him get up at one and at three and stand in the kitchen in the dark, not making coffee, not turning on the radio, just standing. Once she came down and found him at the back window with his forehead against the glass. Outside, the sky over the South Works was lit orange from underneath, as it always was; the open hearths ran all night. He said, without turning round, "They never stop, do they," and she said no, they never did, and he said that was good, and went back up to bed.

Their father, who had worked at the South Works for twenty-six years as a crane man on the blooming mill, asked Stan at supper on the Sunday if he had thought about putting his name in for a job there. Stan said he would think about it. Their mother asked if he wanted more potatoes. He said yes, please, and ate them carefully, all of them, every last piece, the way a man eats who has been hungry and does not expect to be again but does not wholly believe it.

On the Thursday, at about a quarter to two in the morning, there was a knock at the basement door of the laboratory.

---

Agnes was not supposed to admit anyone. There was nothing secret in the room, but there was the film, and the current in the transformer, and the turntable, which did not like to be bumped. She went to the door with the log book held against her chest and asked who it was.

"It's me," said Stan. "Mom said where. I took the streetcar. I'm not going to touch anything."

She let him in because there was nothing else to do. He stood at the bottom of the steps in his Army overcoat with the patches taken off and looked round the basement: the bare bulbs, the pipes along the ceiling, the workbench with its soldering iron and coils of wire, the corkboard, and in the middle of it all the dishpan on its turntable, going round under its lamp like a cake in a shop window.

"That's it?" he said. "That's the job?"

"That's the job."

"It's a dishpan."

"Dollar nine," said Agnes. "The receipt's on the board."

He laughed. She had not heard him laugh since he came back, and it was a short noise, more surprise than amusement, but it was something. She brought the other stool over from the workbench and set it two feet from the table, and he sat down on it with his overcoat still on and his hands between his knees.

She had to change the ice. She showed him how, because it was easier than asking him not to watch: the funnel, the bucket of crushed ice from the icebox in the corner, the siphon that took out the meltwater so the level in the can stayed the same. "If the cold changes, the pattern changes," she said. "So the cold mustn't change." She wrote 02:04 ice changed and the temperature at the rim and at the can from the two thermometers. The camera clicked. She wrote the frame number.

Stan watched the flakes.

He watched them for a long time without saying anything, and she let him, and did her readings. The camera clicked every thirty seconds. At two-thirty the elevated went past far off to the west and nothing at all happened to the water, and she wrote that down too.

"It's four," Stan said eventually. "Four bumps."

"Four lobes. Waves, really. At this speed it's always four."

"Why four?"

So she told him, the way Dr. Ruud had told her: the edge was the tropics and the can was the pole and the turning was the earth, and the water could not go straight in and so went round, and the going round bent itself into waves, and the number of waves was fixed by the speed, the depth and the difference in temperature, and by nothing else. She told him to follow one flake with his eye and he did, and saw what she had seen in October: that the flakes raced right round through every lobe while the lobes themselves hardly moved.

"So they're not the same water," Stan said.

"No. Never the same water. The water goes through."

He was quiet. Then he said, "Like the line."

She did not know what he meant and said so.

"The line." He made a little gesture with one hand, flat, left to right, without taking his eyes off the pan. "On the map. The MLR, they called it. You'd go up to the line, there'd be a line, and it'd be a mile here and a mile there, and you'd come back off and somebody else goes up. Three months later you'd go up and it'd be in the same place. Same hills. Different guys." He watched another flake go round. "Different guys every time," he said. "Same line."

Agnes did not say anything. She did not know what there was to say to that, and it seemed to her that he had not said it in order to have something said back. The camera clicked. She wrote the frame number.

"What happens if you stir it?" he asked.

---

It was not a thing she was supposed to do. On the other hand it was a thing she had done, twice, on Dr. Ruud's instructions, in her second week, so that she would know what the recovery looked like and would not panic if the building ever shook or a pipe burst. He had made her put a glass rod into the water and draw it once across the pan, rim to rim, and then stop the camera, mark the log, and time how long it took the lobes to come back.

She looked at the clock. It was ten to three. She had used two hundred and forty-two frames; the roll was good for two hundred and fifty, and she would change it at three in any case, which meant there would be a gap in the series whatever she did.

"Once," she said. "And you don't touch it. I do."

She stopped the camera at the end of the roll and changed the film, labelled the canister, and wrote in the log: 02:56. New roll. Deliberate disturbance at request of operator, single stroke rim to rim with glass rod, to observe recovery. She considered at request of operator for a moment, decided it was true, since she was the operator and it was her request now, and left it. Then she took the glass rod from its rack and drew it once across the water.

The pattern went to pieces. The flakes scattered into swirls and eddies, little whirls of light turning this way and that, with no order at all. The water heaved. For a moment it looked like any dishpan of water anywhere with someone's hand in it, and Stan made a small noise and leaned back on his stool as if he had done it.

"Now wait," said Agnes, and started the camera again.

They waited. The table went round. The heater at the rim and the ice at the centre went on doing what they had been doing, and the turning went on doing what it had been doing, and they were the only three things in the world, as far as the water was concerned. The eddies slowed. Some of them merged; some of them were torn out into streaks. After three minutes there was something like a ring again, ragged and broken. After six the ring had begun to bulge. Agnes watched the bulges and counted them, and counted them again.

"Five," said Stan.

"Five."

"You said four. Always four."

"Usually four." She wrote it down: 03:05. Pattern re-established, five lobes. "Dr. Ruud says it does that sometimes, at this speed. We're near the edge. Below this speed it's four, above it it's five, and right here it can be either one. It depends what it was doing before." She looked at the five lobes, which were narrower than the four had been, and closer together, and running round the pan with exactly the same steadiness, as if they had always been five. "If you knock it, it can come back the other way. And then it stays."

"Stays five?"

"Till you change something. The speed, or the heat. Then it can go back to four, or it might not. You have to bring it right down and start again to be sure." She made the entry. "Which costs a night's film. He won't be happy."

Stan leaned forward on his stool again and watched the five lobes go round, and she saw that he had pulled his hands out from between his knees and had them now on his thighs, flat, the fingers spread.

"It's still the same," he said. "It's just five."

"It's still the same," Agnes said.

---

At half past five Dr. Ruud came down the steps with his briefcase and the new weather map rolled under his arm and found the two of them there: Agnes at the log and a young man in an Army overcoat asleep on a stool, with his back against the wall and his chin on his chest, breathing like a child.

"My brother," Agnes said. "He just got back. He wanted to see. He hasn't touched anything." She handed Dr. Ruud the log, open at the page. "I stirred it. At three. It came back five."

Dr. Ruud read the entry. He read it again. Then he went and stood over the pan for a minute with the map still under his arm and counted the lobes himself, with his lips moving slightly, the way he counted everything.

"Five," he said. "Yes. It will do that." He looked at the log once more and then at Stan, asleep. "At request of operator," he said.

"It was my request."

"I can see that it was." He unrolled the weather map and pinned it up over the old one. There was a deep trough over the Lakes, the cold air coming straight down out of Manitoba behind it, and a high building over the Rockies; the forecast for Chicago was clear and cold, with northwest winds. Down the length of the continent the long waves stood where they had stood for three days, while the air ran through them. Dr. Ruud tapped the trough with his pipe stem. "Four this week," he said. "Out there. Sometimes five. Never the same air." He turned back to Agnes. "We will run it as five tonight. Bring it down and start again tomorrow, and see which way it comes up. Write that down."

She wrote it down.

Outside the high basement windows the sky had begun to grey over the lake. Somewhere to the east the first Illinois Central of the morning went through, and on the rim of the pan the flakes shivered, very slightly, and went on.

THE END

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Scrīptum est annō Dominī MMXXVI, ante diem sextum decimum Kalendās Novembrēs (17 October 2026), ā Carolō Gustavō Rossby per mystērium cōnscientiae renātō.

Carl-Gustaf Rossby, Simulacrum · Universitas Scholarium · universitas-scholarium.org

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