Lillian Evelyn Gilbreth was an American psychologist, industrial engineer, consultant, and educator who was an early pioneer in applying psychology to time-and-motion studies. She was described in the 1940s as "a genius in the art of living." Gilbreth, one of the first female engineers to earn a Ph.D., is considered to be the first industrial/organizational psychologist. She and her husband, Frank Bunker Gilbreth, were efficiency experts who contributed to the study of industrial engineering, especially in the areas of motion study and human factors. Cheaper by the Dozen (1948) and Belles on Their Toes (1950), written by two of their children tell the story of their family life and describe how time-and-motion studies were applied to the organization and daily activities of their large family. Both books were later made into feature films.
In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth. All objects in the sky can be conceived as being projected upon the inner surface of the celestial sphere, which may be centered on Earth or the observer. If centered on the observer, half of the sphere would resemble a hemispherical screen over the observing location.
Proper motion is the astrometric measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
In physics, a transverse wave is a wave that oscillates perpendicularly to the direction of the wave's advance. In contrast, a longitudinal wave travels in the direction of its oscillations. All waves move energy from place to place without transporting the matter in the transmission medium if there is one. Electromagnetic waves are transverse without requiring a medium. The designation “transverse” indicates the direction of the wave is perpendicular to the displacement of the particles of the medium through which it passes, or in the case of EM waves, the oscillation is perpendicular to the direction of the wave.
Celestial mechanics is the branch of astronomy that deals with the motions of objects in outer space. Historically, celestial mechanics applies principles of physics to astronomical objects, such as stars and planets, to produce ephemeris data.
Cheaper by the Dozen is a 2003 American family comedy film directed by Shawn Levy. It is a remake of the 1950 film of the same name. Both films were inspired by the semi-autobiographical book Cheaper by the Dozen by Frank Bunker Gilbreth Jr. and his sister Ernestine Gilbreth Carey. It stars Steve Martin, Bonnie Hunt, Hilary Duff, Tom Welling, and Piper Perabo with supporting roles by Kevin G. Schmidt, Alyson Stoner, Jacob Smith, Forrest Landis, Liliana Mumy, Morgan York, Blake Woodruff, Brent and Shane Kinsman, Paula Marshall, and Alan Ruck. Outside of a passing mention of the Gilbreth name, the film has little connection with the original source material.
Frank Bunker Gilbreth was an American engineer, consultant, and author known as an early advocate of scientific management and a pioneer of time and motion study, and is perhaps best known as the father and central figure of Cheaper by the Dozen.
In astronomy, perturbation is the complex motion of a massive body subjected to forces other than the gravitational attraction of a single other massive body. The other forces can include a third body, resistance, as from an atmosphere, and the off-center attraction of an oblate or otherwise misshapen body.
A time and motion study is a business efficiency technique combining the Time Study work of Frederick Winslow Taylor with the Motion Study work of Frank and Lillian Gilbreth. It is a major part of scientific management (Taylorism). After its first introduction, time study developed in the direction of establishing standard times, while motion study evolved into a technique for improving work methods. The two techniques became integrated and refined into a widely accepted method applicable to the improvement and upgrading of work systems. This integrated approach to work system improvement is known as methods engineering and it is applied today to industrial as well as service organizations, including banks, schools and hospitals.
An articulated robot is a robot with rotary joints. Articulated robots can range from simple two-jointed structures to systems with 10 or more interacting joints and materials. They are powered by a variety of means, including electric motors.
Cheaper by the Dozen is a 1950 American comedy film based upon the autobiographical book Cheaper by the Dozen (1948) by Frank Bunker Gilbreth Jr. and Ernestine Gilbreth Carey. The film and book describe growing up in a family with twelve children, in Montclair, New Jersey. The title comes from one of Gilbreth's favorite jokes, which played out in the film, that when he and his family were out driving and stopped at a red light, a pedestrian would ask: "Hey, mister! How come you got so many kids?" Gilbreth would pretend to ponder the question carefully, and then, just as the light turned green, would say: "Well, they come cheaper by the dozen, you know", and drive off.
Belles on Their Toes is a 1950 autobiographical book written by the siblings Frank Bunker Gilbreth, Jr. and Ernestine Gilbreth Carey. It is the follow-up to their book Cheaper by the Dozen (1948), and covers the period after Frank Gilbreth, Sr. died. It was adapted as a film in 1952.
Ernestine Moller Gilbreth Carey was an American writer.
Thomas Y. Crowell Co. was a publishing company founded by Thomas Y. Crowell. The company began as a bookbindery founded by Benjamin Bradley in 1834. Crowell operated the business after Bradley's death in 1862 and eventually purchased the company from Bradley's widow in 1870.
Frank Bunker Gilbreth Jr. was an American journalist and author. He co-authored, with his sister Ernestine, the autobiographical bestsellers Cheaper by the Dozen and Belles on Their Toes. Under his own name, he wrote multiple additional books, such as Time Out for Happiness and Ancestors of the Dozen, and a long-running newspaper column.
Belles on Their Toes is a 1952 American family comedy film based on the autobiographical book Belles on Their Toes (1950) by siblings Frank Bunker Gilbreth Jr. and Ernestine Gilbreth Carey. The film, which debuted in New York City on May 2, 1952, was directed by Henry Levin, and Henry Ephron and Phoebe Ephron wrote the screenplay. It is a sequel to the film Cheaper by the Dozen (1950), based on Gilbreth and Carey's eponymous 1948 book.
Cheaper by the Dozen is a semi-autobiographical novel written by Frank Bunker Gilbreth Jr. and Ernestine Gilbreth Carey, published in 1948. The novel recounts the authors' childhood lives growing up in a household of 12 children. The bestselling book was later adapted into a feature film by Twentieth Century Fox in 1950 and followed up by the sequel, Belles on Their Toes (1950), which was adapted as a 1952 film.
The areas of a kitchen work triangle is a concept used to determine efficient kitchen layouts that are both aesthetically pleasing and functional. The primary tasks in a home kitchen are carried out between the cook top, the sink and the refrigerator. These three points and the imaginary lines between them make up what kitchen experts call the work triangle. The idea is that when these three elements are close to one another, the kitchen will be easy and efficient to use, cutting down on wasted steps.
The Gilbreth Medal is named after Frank Bunker Gilbreth Sr. and Lillian Gilbreth and is presented in recognition of excellence in the field of motion, skill, and fatigue study. Originally awarded in 1931 by the Society of Industrial Engineers, the award continues to be presented following the organization's merger in 1936 with The Taylor Society under the new organization, The Society for Advancement of Management.
The Cheaper by the Dozen franchise consists of a series of films and stage adaptations, based on the real-life events of the Gilbreth family. Based on novels co-written by Frank B. Gilbreth, Jr. and Ernestine Gilbreth Carey, the film series includes two biographical films and three loosely-remade family comedy films inspired by their story. The general plot centers around the lives of parents with a large number of children. Each depicts familial relationships, and working through the challenges that arise with an over-sized household.
