457x

: Some academic journals use these digits in their serial numbers. For example, the online version of the journal Food Science and Technology (Campinas) uses ISSN 1678-457X . 3. Finance and Markets

Depending on the context, "457x" can also refer to specific technical or scientific markers: 1. Astronomy Magnification : Some academic journals use these digits in

: It is characterized by high-quality grey mirrors set against a contrasting ebony (black) lacquer finish. : Some academic journals use these digits in

: An observer using a 16-inch telescope might "bump the mag up to 457x" to view fine planetary details or resolve tight double stars. : Some academic journals use these digits in

: The "Euro-Sled" nickname comes from its low, sleek profile and the horizontal lines that resemble a sled or a high-speed locomotive from the period.