Figure A is the side view where you see a virtual point light source(P) made on the apex of a clear and stainless cone-shaped reflector by light source(s). There is an object (A) at the distance of d4 in Figure A.

(Fig. A): The side view where we see virtual point light source. S: light source(100V 100W glow lamp, the sun). e: our eyes. P: virtual point light source. St: a clear and stainless cone-shaped reflector (or stainless mirror). A: an object. d1: two to three centimeters. d2: three to five meters. d3: three to seven meters. d4: six to thirty meters. θ: degree of 90∼120° When you look at A, with your eyes(e) and P in an imaginary straight line while not watching the image of A but rather focusing on the image of P before your eyes.

The image of P(P') is made on a farther spot than our retinae(B), because the curvature of the lens becomes thinner. Therefore the image on the retinae is a virtual image which looks like a dim circle. Figure B is the ray diagram of P' when the focal distance of the lens changes. (Fig. B): the ray diagram of the image B: our retinae. (Fig. C): the front view of the of P when the focal distance altered image of P(P') of lens changes.

Figure C is the front view of P at this instant. If K(a match or a cylinder which is one to three millimeters in diameter) is inserted between e and P, you will see the shadow of K(K') as shown on Figure C. The ray diagram of this moment is Figure B', and its front view is Figure C'. (Fig. B'): the ray diagram where we see the shadow of K printed in Fig. C. (Fig. C'): the front view of the shadow of K(K').
K: a match or a cylinder one to three millimeters diameter.

Chapter 1 does nothing but records the facts of experiments, while Chapter 2 explicates them theoretically. Hence, the explanation of Figure C and the reason for the appearance of K' will be mentioned in Chapter 2.
I suspected that Figure C was very important, and tried to understand it for several days. One day I found a curious looking particle in Figure C.
Its appearance (which looks like a ball bearing) can be observed closer in Figure D. According to figure a bright orange color band whose ingredient looks identical with that of the lump surrounds D, a bright orange color lump such as the yolk of an egg. There is a black band placed between the lump and bright orange color band.
(Fig. D): the circle-shaped particle found on the retinae. A bright orange color lump looks like the yolk of an egg.
When I saw the particle for the first time, it seemed to be the most beautiful thing in the world. At once I was possessed by the question of whether or not the particle was made by chance.

① a bright orange color ball-shaped lump
② a black band
③ a bright orange color band
④ the second bright orange color band

After the prudent and detailed observation on the particle, I concluded at last that it is the water existing on the retinae. Our retinae must always maintain some water in order for its protection. Therefore, it is not so difficult to suppose that the particle is nothing but a tear.
The particle is to be observed easily through experiments. So, there is no use making minute comments on it. It took me about six months to conclude the particle being water. However, if you follow my method it will not take you more than five minutes to verify this. After examining all the facts mentioned above, I derived the following experiment for "the way to see an atom".