As for operating costs, the electric variety can typically reach around $350 a year, according to the pool and spa association, while wood-burning tubs cost little or even nothing for owners who use their own wood.
For instance, if we were looking at biomass to burn and produce electric power, varieties with higher lignin content would be preferred.
Not the electric motor variety – no breakthroughs there – but the painting sort.
The colorful butterfly house draws the most visitors, and as you look for the elusive electric-blue variety, you may run into the couple you dined next to the previous evening.
Franklin, experimenting with varieties of electric shock, swiftly arrived at a fundamental insight: that electricity was a single fluid, and that what he was the first to call "positive" and "negative" charges came from having too much or too little of it.
Motorized scooters, also known as "mini-scooters" to differentiate them from larger, legal scooters like Vespas, come in two varieties -- electric and gas-powered.
Over 25 varieties of electric and plug-in hybrid autos are on the market today, twice as many as two years ago.
Electroceramics, category of advanced ceramic materials that are employed in a wide variety of electric, optical, and magnetic applications.
Ford Motor is asking for $5 billion for a variety of electric car retooling programs and Chrysler, a unit of Cerberus Capital Management, is asking for around $5 billion.
Schwinn has been selling a variety of electric campus cruisers for a few years now, and so have a bunch of other companies.
