Términos

Technique measuring the intensity of electromagnetic radiation over a range of wavelengths using a spectroradiometer, a combination of spectroscope and radiometer.

A nondestructive, noninvasive optical technique used to test the dielectric properties of thin films. Spectroscopic ellipsometry (SE) employs broadband light sources to measure refractive index, absorption coefficient, and film thickness from the polarization characteristics of linearly polarized incident light reflected from the sample's surface.

Wood molds in which the dough for gingerbread or speculaas cookies is formed. The dough is pressed into the mold, forming the entire biscuit, unlike similar molds that are meant to be repeatedly pressed into the dough in series.

Ice skates for competitive speed skating designed with short boots having no ankle support attached to a long, straight blade with an essentially flat bottom. Made to be thin and light, the top part of these blades are often hollow. Speed skates may have asymmetric blade placement on the right or left boot, or have provisions for customized blade placement.

Tracks or roads prepared for fast transportation, including roads for horses or motor vehicles where the dirt surface has been packed or covered with asphalt or another material, and the course is generally straight and flat, where possible.

Any secondary mineral deposit formed by water in a cave such as a stalactite or stalagmite.

Expressions of words with letters, in wrting or verbally.

Chaqueta entallada que llega hasta la cintura o que es más corta, frecuentemente adornada con piel y que era usada por mujeres y niños durante el siglo XIX. También, prenda externa similar sin piel que se usa para abrigarse; se emplea especialmente para designar aquellas que eran usadas por los hombres en los siglos XVIII y XIX.

Úsese especialmente en referencia a templos del antiguo Egipto, urnas o sepulturas talladas en la roca viva.

Genus of one 1 species of dog-like canid of South America.

Tipo de peperino particularmente duro y duradero, extraído de canteras cerca de Castiglione, Italia.

Estructura de la antigua Roma adaptada para el juego de pelota.

A family of moss with only one living genus Sphagnum

Class of moss having two orders.

An order of moss.

Genus containing 150-350 living species of mosses. The taxonomy of Sphagnum species remains controversial, with various botanists accepting quite different numbers of species.

Members of a family containing six living genera and 17 species of flightless diving seabirds native to the oceans of the southern hemisphere, which have an upright stance on land, mainly black and white plumage, a long bill, and wings reduced to scaly flippers or paddles for swimming under water.

Order containing 17 species in one family found in oceans of the Southern Hemisphere having flipperlike wings for propulsion underwater; short stout webbed feet, upright stance upright, and short dense feathers that are molted in patches.

Order of reptiles characterized by a premaxillary downgrowth replacing premaxillary teeth and four to five teeth enlarged at beginning of palatine tooth row. Dating from the Lower Triassic to present, including three families, about 20 genera, but only one surviving genus (Sphenodon) and two living species.

Cryptogamous (using sexual reproduction but lacking stamens or pistils) with hollow, jointed stems and whorls of slender branches at the joints. Today comprises one genus and around 30 species, but they were abundant in earlier periods; some Paleozoic sphenophytes grew up to 100 feet in height.