Physics
Photovoltaics
Photovoltaics (PV) is a term which covers the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic…
Cabin pressurization
Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft, in…
Early flying machines
Early flying machines begins more than a century before the first successful manned aeroplane, and the earliest aircraft thousands of…
Romanticism in science
Romanticism (or the Age of Reflection, 1800–1840) was an intellectual movement that originated in Western Europe as a counter-movement to…
North light in architecture
North light is natural light coming from the north (in the Northern Hemisphere). It consists of light which comes from…
Copper advantages in architecture
Copper has earned a respected place in the related fields of architecture, building construction, and interior design. From cathedrals to…
Purkinje effect
The Purkinje effect (sometimes called the Purkinje shift or dark adaptation) is the tendency for the peak luminance sensitivity of…
Helmholtz–Kohlrausch effect
The Helmholtz–Kohlrausch effect (after Hermann von Helmholtz and Rudolf Kohlrausch) is an entoptic phenomenon wherein the intense saturation of spectral…
Chromatic adaptation
Chromatic adaptation is the human visual system’s ability to adjust to changes in illumination in order to preserve the appearance…
Bezold–Brücke shift
The Bezold–Brücke shift is a change in hue perception as light intensity changes. As intensity increases, spectral colors shift more…