He uses the medical tricorder on everyone in the room exept the ghost.
Even if he did he wouldn't get results.
The two tricorders do a nnnaaawww sound and a yellow light comes on.
Spock types a few things in on his science tricorder.
Then he started typing a kind of letter.
When he fineshed he pressed a button at the side, and everyone had a
blank face, even you and you were scared too!!
Letters swirl around in your brain and finally arrange themselfes to
spell out a letter probably the one that Spock wrote.
Another fuigre beams down.
It's McCoy!
Spock gets McCoy's medical tricorder and attaches it to his Science
tricorder.