Record Collector is the world’s leading authority on the very best rare and collectable records. The magazine was launched in 1979 and it is now the UK’s longest-running music magazine. In seriously ...
Diecast Collector magazine is well-established as the most popular UK magazine for collectors of all types of models. The magazine is written and edited by collectors with a passion for the subject, ...
Scientists have modeled eight different kinds of PVT systems, some with a glass covers and some without. They found the worst efficiency was achieved in uncovered systems with parallel round tubes.