Several days later, Chalmers had worked through the atomic spectra tables. His three crystals matched none of the known elements. He detoured over to physics, the atomic radiation people, and asked if they could tell if his materials were radioactive. The question had come up, after all, though Professor Watership had tried a reasonable test already. The answers were all negative.
Finally, he tried another visit to the mass spectroscopy group. He’d made a point of not nagging them for results, but he was well beyond their estimated time for results. He’d carefully been imprecise about his results with the ebullioscope, which could halfway be understood as having something like chlorine, a mixture of isotopes.
“Ah, Mister Chalmers,” came a firm voice as he stuck his head into the mass spectrometer laboratory. Professor Smith was the person who set up and ran the machine. “Were you happy with our results?”
“I’m sorry, sir,” Chalmers said, “but I actually haven’t received the results yet. I didn’t want to seem to be nagging, but I’m very interested what answer came out.”
“You haven’t?” Professor Smith sounded surprised. “I’m sure you were scheduled for your sample run a couple days ago. Let’s see what happened.”
The responsible technician was sitting at his desk around the corner, writing up results of a recent measurement. He stood as Smith and Chalmers entered.
“Where are the results?” The technician answered. “The results were impossible, so I simply threw out the film. I wasn’t going to waste anyone’s time with it.”
“Results may be wrong, Mr. Michaels,” Smith said, “but they’re never impossible. If they were impossible, they couldn’t happen. What was wrong?”
“For each sample, I had one line for the fluorine, and a one line for the unknown. And some noise. The unknowns are like fluorine, you only see one isotope for each sample. But the unknowns were single isotopes, and their masses weren’t integers, which the laws of nature require. They were close to half integers. You can’t do that, so something was wrong. I don’t know what.”
“I wish I’d heard about that sooner,” Smith said. “Do we still have the film?”
“”Yes sir, I dropped it in the trash, but the trash hasn’t been picked up yet this week.”
“Well, fetch it, and I’d like to see it,” Smith said firmly. “I agree nothing like this is happened before, so I can’t complain too hard that I didn’t tell you what to do if it did. Next time, if things don’t make sense, please tell me.”
The abashed technician handed over the film. Smith led Chalmers to a light table, laid out each strip of film, and did a few measurements.
“Mr. Michaels,” Smith called across the room to his technician, “I agree with your half-integer atomic weights, so you seem to have gotten that part right. And if I’d been in your boat, I don’t know what I’ve done either. Which leads to a question, Mr. Chalmers. There are simpler ways to measure atomic weights. Freezing point depression. Boiling point elevation. Chemical analysis. Was there a reason you didn’t use those?”
Chalmers swallowed. “Sir, I actually did. I found strange results. For the first, atomic weight 52.5. Except the ebullioscope readings made no sense. But my result seemed hard to understand, unless it was like chlorine, with two isotopes, which your instrument can check, and colligative properties do not.”