If only magnesium were less expensive. According to researchers at the Pacific Northwest National Laboratory (PNNL), based in Washington State, USA, the magnesium used in the production of lightweight alloys for cars and aeroplanes is seven times more costly than the steel employed in the same applications.ccording to researchers at the Pacific Northwest National Laboratory (PNNL), based in Washington State, USA, the magnesium used in the production of lightweight alloys for cars and aeroplanes is seven times more costly than the steel employed in the same applications.
Definition of polemic for English Language Learners. : 1  a strong written or spoken attack against someone else's opinions, beliefs, practices, etc. 2  polemics : the art or practice of using language to defend or harshly criticize something or someone.
spat. 1. A discussion, often heated, in which a difference of opinion is expressed: altercation, argument, bicker, clash, contention, controversy, debate, difficulty, disagreement, dispute, fight, polemic, quarrel, run-in, squabble, tiff, word (used in plural), wrangle.pat. 1. A discussion, often heated, in which a difference of opinion is expressed: altercation, argument, bicker, clash, contention, controversy, debate, difficulty, disagreement, dispute, fight, polemic, quarrel, run-in, squabble, tiff, word (used in plural), wrangle.