
Eye Chart
An eye chart, also referred to as Snellen chart after Hermann Snellen who invented it in 1862, is a chart used to test visual acuity. An eye chart consists of… Read more »
An eye chart, also referred to as Snellen chart after Hermann Snellen who invented it in 1862, is a chart used to test visual acuity. An eye chart consists of… Read more »
A birthday chart is a chart listing the birthdays of all people in a family, at home, or in a classroom. A birthday chart allows the other members of the… Read more »
A timeline is a diagram that displays the chronological order of various events. A timeline can be used to see how those events take place at certain points in a… Read more »
Periodic table of elements is a table of chemical elements that are arranged horizontally according to their atomic number or weight and vertically according to their chemical properties. Chemical elements… Read more »