"What happened?" Bruce Banner's attention was instantly pulled back to the computer.
"It's nothing, nothing." Harp's fingers flew across the keyboard as he swiftly pinpointed the error. "There's just a problem with the wiring for the gamma-ray irradiation device. Probably a bad relay connection. I'll adjust it."
After halting all programs and silencing the error alarm, Harp reentered the controlled area. He pried apart the machine's framework and plunged headfirst into the spherical gamma-ray irradiation device.
Gamma rays themselves carried immense energy and possessed extremely strong penetrating power. To keep the rays from striking anyone in the operating area, Bruce Banner had not used heavy lead plates to separate the areas while monitoring the controlled area with cameras.
Instead, he had arranged numerous irradiation devices in a sphere, firing gamma rays inward. Those devices themselves served as the best shielding. As long as they were positioned at the proper angles, the gamma rays would neither scatter where they should not nor waste energy.
That was why only a large pane of glass separated the controlled area from the operating area. It was not because the glass possessed some kind of black technology; Bruce Banner was simply confident in his own techniques and calculations.
A faulty relay connection was a minor problem and fairly easy to handle. Pull it out and plug it back in, maybe give it a shake. If it still reported an error, replace it.
The difficult part was that the relay had been installed in an awkward position. That was why Harp had to separate the irradiation device's supporting framework and crawl inside to work on it.
Still, this was not his first time doing it, and Harp was thoroughly familiar with the process. There was already a switch-operated entrance for sending bullfrogs into the irradiation area.