The mark is drawn on the mirror. Why can it float?

Because the reflective coating of the mirror is on the back of the glass, it is generally nickel, chromium, silver and so on. The glass has a certain thickness, that is, the painting has a certain distance (several millimeters) from the reflective layer. In this way, as long as there is a little angle, you can see total reflection. Total reflection and the actual object (painting itself), due to the angle, plus the reflection of the glass outer surface itself, can see the "suspension" effect.

Many wrapping paper also has reflective nickel coating on the inner wall, and there is a transparent "plastic" coating on it. If you draw, you can't see the "suspension" effect, because the plastic coating on this reflective coating is very thin and micron-sized, which can't be distinguished by the naked eye, so it seems to have no "suspension" effect.

Extended data:

Marker pen (English: marker pen or marker pen), also known as marker pen. It is a drawing color pen specially used for writing or painting. It contains ink and usually has a pen cover, usually with a hard and soft nib.

The pigment of marker pen is volatile and can be used for quick drawing at one time. It is often used to design articles, advertising slogans, posters or other artistic creations. You can draw thick lines with little change. Box-head pen is a kind of marker pen.

At present, marker pens are also divided into water-based and oil-based inks. Water-based ink is similar to colored pen, and contains no oil essence. Oily ink is more irritating and volatile because it contains oil essence. If the paint falls off the toy, you can use a marker to make up the color.

Divide by writing

1, fiber pen

The brush strokes of fiber pens are tough, sharp and uniform in color. High-end pens are designed to be multi-faceted, and strokes with different widths can be drawn with the rotation of the pen. Suitable for the shaping of space blocks, mostly used for hand-drawn expression of architecture, interior, industrial design and product design. Optical fiber heads are divided into ordinary heads and high-density heads, and the difference is that writing is bifurcated and not bifurcated.

2, foam pen

Foam pen is wider than fiber pen, with soft strokes and full colors. The painted color has a granular texture, which is suitable for the expression of soft scenery and objects such as landscapes, water bodies and figures, and is mostly used in landscapes, gardens, clothing, animation and other occupations.

References:

Marker-Baidu Encyclopedia