A cloud of dust rose
up. He activated the laser through it. A bright blue beam appeared. He
turned a dial and the beam became a brilliant green.
"Lasers of different frequencies, all in one tool!" Mark exclaimed.
"Yeah, and it's got red too!"
"Lots of possibilities with this," said Zip. "I'll bet it can be used
to open the spacecraft. The doors can't be only voice-activated, or
they couldn't open the door in a vacuum. What else is there? Heat,
magnetism, light? They used heat, body heat, on the panel back in the
room where we were kept prisoner. Heat won't work in deep space. Let's
try light. We've got the tool here."
The Starmen went back over to the spacecraft. Joe set the laser for
blue light and ran the beam over the surface of the ship. For several
minutes he tried various colors and intensities. When he set the laser
for yellow light, there was a change in the surface of the ship.
"Ah!" said all three Starmen at once. The outline of a door appeared,
with markings in several places. Joe experimented a little more,
placing different intensities on the markings. In a moment he was
rewarded. The door recessed a few inches into the ship, and slid aside
with quiet efficiency. Joe immediately stepped through the portal.
The furnishings of the alien spacecraft were similar to what the
Starmen were familiar with, but the control panel was more challenging.
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