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Distance education, also known as distance learning, is the education of students who may not always be physically present at school, [1] [2] or where the learner and the teacher are separated in both time and distance. [3]
Reproduction of an early electron microscope constructed by Ernst Ruska in the 1930s. Many developments laid the groundwork of the electron optics used in microscopes. [2] One significant step was the work of Hertz in 1883 [3] who made a cathode-ray tube with electrostatic and magnetic deflection, demonstrating manipulation of the direction of an electron beam.
Automated essay scoring (AES) is the use of specialized computer programs to assign grades to essays written in an educational setting. It is a form of educational assessment and an application of natural language processing. Its objective is to classify a large set of textual entities into a small number of discrete categories, corresponding ...
Sinhala (/ ˈ s ɪ n h ə l ə, ˈ s ɪ ŋ ə l ə / SIN-hə-lə, SING-ə-lə; [2] Sinhala: සිංහල, siṁhala, [ˈsiŋɦələ]), [3] sometimes called Sinhalese (/ ˌ s ɪ n (h) ə ˈ l iː z, ˌ s ɪ ŋ (ɡ) ə ˈ l iː z / SIN-(h)ə-LEEZ, SING-(g)ə-LEEZ), is an Indo-Aryan language primarily spoken by the Sinhalese people of Sri Lanka, who make up the largest ethnic group on the ...
On the top of the left hand page is an illuminated letter "D" – initial of "De urinarum differencia negocium" (The matter of the differences of urines). Inside the letter is a picture of a master on bench pointing at a raised flask while lecturing on the "Book on urines" of Theophilus. The right hand page is only shown in part.
Pollution is the introduction of contaminants into the natural environment that cause adverse change. [1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring ...
The type of battery, the type of traction motor and the motor controller design vary according to the size, power and proposed application, which can be as small as a motorized shopping cart or wheelchair, through pedelecs, electric motorcycles and scooters, neighborhood electric vehicles, industrial fork-lift trucks and including many hybrid ...
A man speaking Twi. Twi is a variety of the Akan language spoken in southern and central Ghana by several million people, mainly of the Akan people, the largest of the seventeen major ethnic groups in Ghana.