The Secchi Disk is a 12-inch black and white plate attached to a rope or chain and lowered into a body of water until it is no longer visible. The depth at which the disk can no longer be seen is ...

CONNECTED TO THE VATICAN. I THINK THAT THE SKI DISC IS A REALLY VALUABLE TOOL BECAUSE IT’S SO EASY FOR PEOPLE TO UNDERSTAND THIS TEN INCH WHITE PLATE HAS A SIMPLE DESIGN. KNOWN GLOBALLY AS THE SKI ...

INCLINE VILLAGE, Nev. — UC Davis Tahoe Environmental Research Center next week will be celebrate Father Angelo Secchi’s 203rd birthday. To honor him, TERC has declared Tuesday, June 29, to be Secchi ...

In celebration of Lakes Appreciation Month, the annual Secchi Dip-In will be held from 10 a.m. to noon July 31 at Loch Lomond Reservoir. The public is invited to this outdoor, family-friendly event to ...