Tungsten is a metallic element.
Tungsten is a grayish-white metal.
tungston
Tungsten is the most commonly used element in filaments due to its high melting point and ability to emit light when heated. Alternatively, some filaments also use carbon or other metals like osmium or rhenium.
The need for oil, iron ore, copper, tungston, etc. (raw materials).
Japan does not have oil or prescious/heavy metals; such as copper, lead, tungston, etc.
All metals will have plenty of electrons in conduction band. Hence Tungston and Platinum are good conductors of electricity as they are metals. S.Lakshminarayana.
Synthetic is 100% synthetic. There are blends sold that are part synthetic & regular oil. Look for a quart that sates FULL or 100% Synthetic. If it says Synthetic Blend then it is not 100% Synthetic.Synthetic is 100% synthetic. There are blends sold that are part synthetic & regular oil. Look for a quart that sates FULL or 100% Synthetic. If it says Synthetic Blend then it is not 100% Synthetic.
Polyester is synthetic.
Semi synthetic or synthetic blend is a combination of synthetic and conventional oil. Full synthetic oil is just that 100% synthetic oil.
You can mix part synthetic oil with full synthetic oil.
You can use synthetic, synthetic blend, or conventional oil. It is your choice.
synthetic to conventional - ok conventional to synthetic - no