what effect does the guitar player in sound garde use in the song 'black hole sun' right after the intro
Legend LP
Nylon Acoustic
Legend 10D Amp
Korg AX3G

I think its called the lesile effect. I dont know exactly what that is though.

The other way to do it would be a slide with a vibrado, delay, and reverb. In that order.
Framus Cobra
Marshall JCM 900
peavey 5150

Mesa 4x12
it's a leslie rotating speaker emulation on the high pickings of the verse. not sure what pedal made the sound tho.

i know kim thayil used a Boss CE-2 chorus so maybe that with the rate up high is what gives it it's warbly shimmery tone.
Sounds like a chorus with the rate up to me rather than a leslie.
ESP M-1 - Dimarzio Super3
Ibanez RG3270 ToneZone/Blue Velvet/Paf Pro
Ibanez RG1527
Mercer Blackmachine Replica

Diezel Herbert
Diezel Einstein Combo
TC GMajor

Gain Wh0re and Diezel Mafioso