Hippocrates and Galen advanced the concept of humorism, a theory which held that we get sick from imbalances of the four basic substances within the human body, which they identified as blood, phlegm, black bile and yellow bile.
If I bought a pair of $190,000 Focal Grande Utopia EM and found out the beryllium isn't any more pure than a pair of $2700 speakers, I'd be very upset. I would also be upset if the beryllium tweeters in my $190K speakers cost less than diamond tweeters in a pair of $5K speakers.
1 A do-it-yourself epoxy floor kit can cost $50-$600 or more, depending on the type of epoxy, the square footage the kit will cover, the number of coats required and the number of tools and other materials included in the kit.poxy flooring is a paint or coating system that is typically made up of two separate materials. When mixed together, the resulting substance quickly hardens into a durable semi-gloss or high-gloss flooring surface (although epoxy may fade or yellow when exposed to direct sunlight).