ok so i bought this 200mw green laser pointer off a website and it didnt come with any safety goggles but anyway im just using it to shine it at stars at night will it damage my eye for looking at the beam? i shined on the ground a couple times but i coundnt do it anymore because its soo bright will this laser damage my eye though for just shining it in the sky?
The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. At lower concentrations (eg 100 parts per million) the detector will not sound an alarm for many tens of minutes. At 400 parts per million (PPM), the alarm will sound within a few minutes. This concentration-time function is intended to mimic the uptake of carbon monoxide in the body while also preventing false alarms due to relatively common sources of carbon monoxide such as cigarette smoke. From
You can purchase a Contact Cement Cleaner usually made by the same company that makes the glue. Try it first on an inconspicuous area to make sure it doesn't ruin the finish in the tile, although it shouldn't. Good Luck: Purchase at any hardware store.
