[Answer] 7. Three of these scientists have a unit of measurement named after them. Who is the odd one out?

Step 1 : Introduction to the question "7. Three of these scientists have a unit of measurement named after them. Who is the odd one out?"

...1. Andre-Marie Ampere 2. Heinrich Hertz 3. Albert Einstein 4. Isaac Newton The Hertz (Hz) is the SI unit of frequency; the newton (N) is the SI unit of force; and the ampere (A) is the SI unit of electric current. Other units of measurement named after people include the becquerel, coulomb, farad, gray, henry, joule, kelvin, pascal, siemens, sievert, tesla, watt and weber. Einstein did have an element named after him, though, so he shouldn't feel altogether left out.

[Ans] What unit of measurement does the 20 in 20/20 vision refer to?

Step 1 : Introduction to the question "What unit of measurement does the 20 in 20/20 vision refer to?"

20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision ) measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet  · A person with 20/20 vision can see what an average individual can see on an eye chart when they are standing 20 feet away. An eye chart measures visual acuity,

Step 2 : Answer to the question "What unit of measurement does the 20 in 20/20 vision refer to?"

Feet:

20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet what should normally be seen at that distance. If you have 20/100 vision, it means that you must be as close as 20 feet to see what a person with normal vision can see at 100 feet. Having 20/20 vision does not necessarily mean you have perfect vision. 20/20 vision only indicates the sharpness or clarity of vision at a distance.

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