This left the thorium, which was cast into ingots in beryllia crucibles.
2.
Some magnetrons have beryllium oxide ( beryllia ) ceramic insulators, which are dangerous if crushed and inhaled, or otherwise ingested.
3.
The CM-7 ( Miscellaneous Metallurgy ) Group produced beryllia bricks for the Water Boiler's tamper in December 1943 and January 1944.
4.
In addition, beryllia is listed as a confirmed human carcinogen by the IARC; therefore, broken ceramic insulators or magnetrons should not be directly handled.
5.
Natural uranium was used as enriched was not available, and similarly graphite was chosen as a neutron moderator because beryllia was toxic and hard to manufacture, while heavy water was unavailable.
6.
The alkaline earth metals are named after their oxides, the " alkaline earths ", whose old-fashioned names were beryllia, compounds is attributed to the chemist Antoine Lavoisier.
7.
Some mirror makers evaporate a layer of quartz or beryllia on the mirror; others expose it to pure oxygen or air in an oven so that it will form a tough, clear layer of aluminum oxide.
मोबाइल