Windows Phone 8.1 arrived last year, finally bringing many features lacking from Microsoft's platform. Now, Microsoft is on the verge of rebooting once again with Windows 10 Mobile. Windows Phone has been rebooted enough. With constant Windows Phone change, the only thing that has remained persistent is a lack of apps.
Part of the Electronics glossary: The dielectric constant is the ratio of the permittivity of a substance to the permittivity of free space. It is an expression of the extent to which a material concentrates electric flux, and is the electrical equivalent of relative magnetic permeability.
The solar constant is a flux density measuring mean solar electromagnetic radiation (solar irradiance) per unit area. It is measured on a surface perpendicular to the rays, one astronomical unit (AU) from the Sun (roughly the distance from the Sun to the Earth). The solar constant includes all types of solar radiation, not just the visible light. It is measured by satellite as being 1.361 kilowatts per square meter (kW/mÂ²) at solar minimum and approximately 0.1% greater (roughly 1.362 kW/mÂ²) at solar maximum.