# Advice 1: How to measure for eyes

To measure the eye using the eye – a person's ability to estimate the distance to objects or their sizes without the aid of instruments. This feature is developed with the help of special exercises or practice, measurements can be produced in several ways.
Instruction
1
If you need to measure the distance to a moving object, then use the tactic of closing the eyes. Take, for example, a person who is on the opposite Bank of the river.
2
To find the distance to a moving pedestrian, extend your arm in the direction of movement of the traveler and focus your eyes the right eye at the end of the index finger until the person closes to them.
3
At this point, close the right eye and open left. The traveler while supposedly will bounce back.
4
Now count how many steps will make the pedestrian before you reach your finger.
5
The distance to the traveler, which is on the opposite Bank, calculate from proprcia: D / P = L / G where D is the desired that you want to calculate in steps P – distance, which has passed the pedestrian (even if it is for example equal to 18 steps), L – the distance from the end of the arm to the eyes, it is on average equal to 60 cm, G – the distance between the pupils, it is on average equal to 6 cm. From the formula it follows that D = N x L / G. the result is: D = 18 x 60 / 6 = 180.
6
Knowing that one step is equal to about 0.75 m, calculate the distance in meters: 180 x 0.75 = 135 m. This distance is passed the traveller on the opposite Bank of the river.
7
If you need to determine the distance nedvizhemost objects, then apply the tactics of grass. Take, for example, the river width where you need to determine.
8
To start, click on the opposite Bank of the river two visible object located as close as possible to the water.
9
Stand on the very edge of the shore, take in both hands the blade of grass and stretch your arms in front of him, one eyes close.
10
Fold the blade in half and start to move away from the coast up to that time, while the distance between the two wybranymi objects are not closed by the blade of grass.
11
Now measure the distance at which you had to move from the beginning shore, and you will get the width of the river.

# Advice 2: How to know the color of eyes of a child

Pending baby's parents are usually interested in everything that concerns the appearance of the unborn child. Is not the exception and the color of the eyes of the newborn. Although children are born, usually blue-gray or bluish-gray eyes, and over time their color changes.
Instruction
1
Consider the fact that eye color is inherited. This postulate put forward Johann Mendel, the Austrian biologist and botanist, who lived in the XIX century. According to his law, eye color inherited in the same way as the hair: if dark genes are the dominant colors, distinctive features (phenotypes) encoded them, take their superiority over the hallmarks of a lighter color.
2
Look at the color of their eyes and the color of the iris of the husband or wife. If you both have dark color eyes or brown, the baby probably will be born with dark eyes. Accordingly, the children of parents who have bright eyes, will also have light color eyes.
3
If you and your spouse eye color is different, then determine the color of the iris of your child according to the theory of dominant genes. For example, mom's blue eyes and dad is light green. Their baby might have blue eyes with probability – 60%, light green – 40%, as the blue color is dominant.
The most common eye color on earth is brown and rare green.
4
Don't panic if at birth his eye color doesn't meet your expectations or does not match the color of your eyes. The vast majority of children at birth have blue-grey or bluish-grey eyes. Around 6-7 months it becomes clear, what will be the color of the eyes in the future. Those children who have dark skin at birth, usually have dark grey or brown eyes. Eye color is determined by most of the parental genes, but even great-grandfather or great-grandmother can suddenly make a contribution.
5
Refer to the online programs on the Internet that offer to help prospective parents determine the color of the eyes of a child. To do this, specify the color of your eyes and the eyes of the partner, as well as the eye color of your parents and partner's parents, your brothers and sisters.
The calculator will make a calculation and give the probability of future color of eyes your child.
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