One of the main benefits of toughened mirror glass is its durability. The heat treatment process that the glass undergoes serves to strengthen it, making it less likely to break or shatter upon impact. This is particularly important in areas where breakage is a concern, such as in bathrooms or children's bedrooms.

The first big slide took place in a theatre in Paris in the 1790s after the Revolution. After waiting for a few minutes in total darkness with the eerie background music of a glass harmonica, the audience begins to see various shapes appear in the sky, which appear to be light and shadow patterns floating and gliding through the air. These ghosts are pale and lifelike, and can talk, shout, and cry. One of the ghosts is a bleeding nun, first coming closer and then gradually moving away. Later slides involve the ghosts of recently deceased public figures, who are said to have been summoned by the power of science. Because that's how these shows are marketed: it's an intersection between science and religion, faith and enlightenment. They're scary, but they're also hilarious.

Soft coat low-e glass, on the other hand, is produced by depositing multiple layers of metal or metallic oxide onto the glass surface in a vacuum chamber after the glass has been manufactured. This type of low-e glass has higher energy efficiency properties and is typically used in residential applications.