With a cornice, it is the fascia board. May also be called verge board. Base or Baseboard: A narrow board or member placed at the juncture of the floor and wall to cover the joint. Base Cap: A strip of wood or other molding used to finish the upper edge of the baseboard. Base Shoe: A trim piece of wood or other material used at the bottom of the baseboard.
Russiaâs Secret City: The Most Radioactive Place On Earth. âThe arms race is a race between nuclear weapons and ourselves.â âMartin Amis. In A Nutshell. Russiaâs Lake Karachay was used in the 1950s as a dumping site for radioactive waste. Now it is the most polluted place on the planet, with enough radioactivity to kill a person in less than an hour. At its height, it was putting more than 200,000 times the normal amount of radioactivity into the area due to poor waste disposal practices.
A very popular element, carbon, also has isotopes. There are three isotopes of carbon: carbon-12, carbon-13 and carbon-14. The numbers that are after the carbon refer to the atomic mass. The most common and abundant isotope of carbon is carbon-12.here are different types of radioactive isotopes. Long-lived radioactive isotopes were created when the solar system was formed, and they've been present for billions of years. Examples of long-lived radioactive isotopes include potassium-40, rubidium-87 and uranium-238.