JML Platinum 20 Sec. - Removes scratches and scuffs in paintwork in just 20 seconds
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Large Stopwatch - Use the Stopwatch in FULL SCREEN. Great for meetings, classrooms, conferences, schools, anywhere really... :-) In a small 2020 study, a group of patients at a university eye clinic were advised to follow 20-20-20 instructions. Twenty days later, self-reports showed no change in computer eye strain symptoms. But results of a clinical test, “tear break-up time,” indicated a significant reduction in dry eye. Washing your hands for at least 20 seconds is the most effective way to ensure your hands aren’t spreading pathogens," says family physician Dr. Natasha Bhuyan, MD. "This is in two ways: it helps both wash away dirt and grime and germs, but also helps kill pathogens."
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Fuls, J.L. (2008) Alternative hand contamination technique to compare the activities of antimicrobial and nonantimicrobial soaps under different test conditions. Applied and Environmental Microbiology, https://pubmed.ncbi.nlm.nih.gov/18441107-alternative-hand-contamination-technique-to-compare-the-activities-of-antimicrobial-and-nonantimicrobial-soaps-under-different-test-conditions/. Next, let's look at an example showing the work and calculations that are involved in converting from seconds to minutes (s to min). Second to Minute Conversion Example Task: Convert 180 seconds to minutes (show work) Formula: Results of a 2013 study involving 795 university students suggested that those who periodically refocused on distant objects while using the computer had fewer symptoms of computer vision syndrome, which include eye strain, watering or dry eyes, and blurred vision.
Little scientific research has tested the effectiveness of the 20-20-20 rule, but both the American Optometric Association (AOA) and the American Academy of Ophthalmology (AAO) recommend it as a way to reduce eye strain.
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The units involved in this conversion are seconds and minutes. This is how they are defined: Second Spending long periods looking at a screen can strain the eyes. Using the 20-20-20 rule can help to prevent this problem. For every 20 minutes a person looks at a screen, they should look at something 20 feet away for 20 seconds.An eye doctor may need to evaluate their vision and test the level of moisture in the eyes. When making recommendations, the doctor will take a person’s occupation and overall eye health into account.