"Just zoom in on this picture, take a magnifying glass...... But you don't. ”

Chang Shuang clasped his hands on his chest, annoyed, there is no magnifying glass here, it is difficult to do.

"Magnifying glass?" Sure enough, E Hebai looked dazed.

"Frost, what's a magnifying glass?" Of course, Jin Qianman didn't understand, but he was very interested, and Chang Shuang came up with something funny.

"As the name suggests, it is something that can magnify things, that is, a mirror, unlike a mirror that looks at the face, a magnifying glass cannot look at things, it is transparent, and it can magnify the object opposite the lens."

E Hebai really wanted to see this magnifying glass, and his eyes were shining with joy, "As far as I know, Daqin should not have this magnifying glass, where is it, Shuang'er knows?" ”

"This ...... Daqin has it, it was given to me by my unofficial theological physician father, and I'll go back and see if I bring it. ”

Chang Shuang lied again temporarily, and at this time she felt that the name of the priest was useful.

Chang Shuang was thinking about what the material of this magnifying glass was, and when it came to this, she had to make it, otherwise the drawings would be in vain and useless.

The magnifying glass is mainly the lens part, and it doesn't matter what material is used for the mirror handle, as long as the lens can be connected.

The material of the lens needs glass, and this Daqin does not have glass, but the mirror does, and the copper mirror.

The copper mirror is a tool for people to look at their faces, and it is a mirror made of copper, and the copper mirror is polished to the extent that it can see things. However, the copper mirror is not a crystal thing after all, and no matter how bright the copper is polished, it is not very clear to see.

Copper mirrors are not glass, and they cannot be used to make magnifying glasses.

In fact, Changshuang can make a simple magnifying glass, that is, water drops on the transparent glass to form a simple magnifying glass.

In the final analysis, glass is still needed, and if Daqin doesn't have glass, it needs to be made.

If you don't have a magnifying glass, you have to make a magnifying glass, and you need glass to make a magnifying glass, and if you want to have glass, you have to make glass first.

Chang Shuang suddenly felt so troublesome.

In fact, Chang Shuang also has a simple method, using water to expand the image of the object. Water has the effect of magnifying it, and putting water on a paper can also enlarge the drawing.

However, there is always a thing but, paper is a perishable thing, and it cannot be directly touched with water, otherwise the drawing line will be blurred and destroyed.

There should be no direct contact, and there needs to be a barrier between the water and the paper, which must be transparent. In addition to glass, Chang Shuang thought of plastic wrap.

Cover the paper with plastic wrap to prevent water from soaking the paper, and then drip water on the plastic wrap, and the water passes through the transparent object, which can make the picture and text expand, which can replace the magnifying glass.

But, it's still this, where does she go to find this thing like plastic wrap?

Thinking about it, she still has to rely on glass, and to make glass, she needs to use ore, crystal, agate, gemstones, limestone and other materials, but she doesn't have crystal agate gemstones.

Seeing the expression on Chang Shuang's face change, others were even more curious about what she was thinking.

Ehebai couldn't help but ask: "Frost ......"

"Ehebai, you have agate crystals, give it to me."

After Chang Shuang asked Ehebai for gems, he then took Jin Qianman back to Ning Town. He Bai didn't bring any gems with him, so at Changshuang's request, he immediately sent someone back to Beijing to get them.

There are a lot of gems in Eyanmo, all kinds of gems, and some special gems that Changshuang needs are not available in Ehebai, he wrote to Eyanmo and asked Eyanmo to provide. Read the latest chapter of "The Farmer's Wife: Xiang Gong's Pet Claw Book House" for free for the first time.