Because if you use a glass thermometer, there is more chance of disease or micro organisms being spread.
Because a glass thermometer has a liquid inside (alcohol or mercury), that can poison you if it brakes.
Strip thermometers are thin, flexible adhesive strips that contain temperature-sensitive indicators to measure body temperature. They are typically placed on the forehead or other parts of the body to track changes in temperature. Strip thermometers are easy to use, non-invasive, and provide a quick way to monitor body temperature.
The forehead thermometer is a disposable strip of plastic with liquid crystals embedded into the strip. To take a person's temperature, one places the strip against the person's forehead. The liquid crystals react with the temperature of the skin. After waiting anywhere from a few seconds to a few minutes, depending on the brand, the crystals will change color. The thermometers have a number line that shows the temperature based on the color displayed.
plastic
Mercury is a liquid metal used in thermometers. However, it becomes a solid at -37.9 F and it can cause mercury poisoning if ingested or inhaled. Therefore, most theremometers use ethyl-alcohol or a plastic strip covered with liquid crystals (called a liquid crystal thermometer).
The plastic strip is not replaceable since the strip isn't available as a separate part. The regulator assembly which contains the strip is what needs replaced.
The 16 types of thermometers include mercury, digital, dial probe, infrared, medical, food, liquid crystal, bimetallic strip, gas, resistance temperature detector (RTD), thermocouple, pyrometer, oven, candy, alcohol, and compost thermometers.
put it in the water and it can be attracted to anything
No. It is perfectly fine to leave the plastic strip on. The strip is there to keep the shingles from sticking together in the bundle. Try to remove this strip while doing a ten or fifteen square roof and watch your time a frustration rise.
The movement of paper bits towards the rubbed plastic strip indicates the presence of static electricity. When the plastic is rubbed, electrons transfer from the plastic to the paper, causing the paper bits to be attracted to the strip due to opposite charges.
A white precipitate of silver chloride forms on the plastic strip due to a chemical reaction between the chloride ions present in the plastic and the silver ions in the silver nitrate solution. The silver chloride can be removed from the plastic by rinsing it with water to reveal a visible change on the strip.
very probably there will be adjusting screws under the plastic strip. be careful prying plastic strip or plastic hole covers as they can get brittle with age and can snap. Be sure to use the correct type and size of screwdriver as once the adjusting screw head is stripped they're really hard to get out to replace.