The dew is one of the many forms of precipitation. It consists of water droplets appearing on an object’s surface in the morning and in the evening. It appears when the outer temperature of a solid object is lower than the ambient dew point. Water vapor then begins to precipitate creating small drops on the surface of a cool object. This effect often comes to pass during radiation cooling of the Earth’s surface on bright and windless nights. Radiation cooling is especially intensive in the case of metals, plant leaves, or glass. Highest amounts of dew emerge in humid air at high dew point. In the Czech Republic, even in such case, the total amount of precipitation does not exceed the level of 0.5mm. Source: Czech Wikipedia. OK. Quite a science.
Working with glass is much like carpentry. If you have an understanding of a craft, you have the advantage. It’s all about physics. One has to understand the material, and this goes double for glass. One must know its characteristics, and what one can do with it. If you want to make something, you must know what will happen to the material you’re working with, as if you don’t know, your design will be useless. Everyone can make sketches, but to design and then manufacture a functional product which people will be willing to use and pay for is a true challenge.