The Movie: Bruce Banner has been ostensibly brought to the Helicarrier to help S.H.I.E.L.D detect gamma ray signatures that might lead them to the Tesseract. Banner says, "Call every lab you know, tell them to put the spectrometers on the roof, and calibrate them for gamma rays."
Real Life: Again, props to the movie for getting the electromagnetic spectrum right: the Tesseract, with its insane amount of energy, would emit gamma rays. However, gamma ray spectrometers aren't usually found in Earth's laboratories — they're in space. Because these high energy rays are blocked by the atmosphere, scientists who study them must rely on satellite spectrometers to get readings. It would be as much help to have the scientists of S.H.I.E.L.D's laboratories put some deck chairs up on the roof as putting spectrometers up there: at least then they'd get a nice tan out of it.