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.
The most recent published industry source (August 1999) on tantalum product prices indicated that theaverage selling prices per pound tantalum content for some tantalum products were as follows: capacitor-gradepowder, $135 to $260; capacitor wire, $180 to $270; and vacuum-grade metal for superalloys, $75 to $100.he most recent published industry source (August 1999) on tantalum product prices indicated that theaverage selling prices per pound tantalum content for some tantalum products were as follows: capacitor-gradepowder, $135 to $260; capacitor wire, $180 to $270; and vacuum-grade metal for superalloys, $75 to $100.