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Robert Schiffmann
Robert Franz Schiffmann (February 11, 1935 – September 4, 2021) was an American inventor and writer. Biography Schiffmann was born on February 11, 1935 in Manhattan, New York City, to Franz Schiffmann, a tool and die maker, and Sophie (Bolling) Schiffmann, a homemaker. He grew up in a brownstone on West 88th Street, which he later transformed into his primary research lab. Schiffmann obtained a bachelor's degree in pharmacy from Columbia University in 1955 and a master's degree in analytical science and physical chemistry from Purdue University in 1959. Career Schiffmann began his career at DCA Food Industries in 1961, where he experimented with microwaves and invented large microwave doughnut fryers. He later worked at Bedrosian & Associates, focusing on consumer food product development. In 1978, Schiffmann founded R.F. Schiffmann & Associates, contributing to advancements in microwave ovens, food preparation, and safety standards. He also served as president of the Inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan
Manhattan ( ) is the most densely populated and geographically smallest of the Boroughs of New York City, five boroughs of New York City. Coextensive with New York County, Manhattan is the County statistics of the United States#Smallest, largest, and average area per state and territory, smallest county by area in the U.S. state of New York (state), New York. Located almost entirely on Manhattan Island near the southern tip of the state, Manhattan constitutes the center of the Northeast megalopolis and the urban core of the New York metropolitan area. Manhattan serves as New York City's Economy of New York City, economic and Government of New York City, administrative center and has been described as the cultural, financial, Media in New York City, media, and show business, entertainment capital of the world. Present-day Manhattan was originally part of Lenape territory. European settlement began with the establishment of a trading post by Dutch colonization of the Americas, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microwave Oven
A microwave oven, or simply microwave, is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. This induces Dipole#Molecular dipoles, polar molecules in the food to rotate and produce thermal energy (heat) in a process known as dielectric heating. Microwave ovens heat food quickly and efficiently because the heating effect is fairly uniform in the outer of a homogeneous, high-water-content food item. The development of the cavity magnetron in the United Kingdom made possible the production of electromagnetic waves of a small enough wavelength (microwaves) to efficiently heat up water molecules. American electrical engineer Percy Spencer is generally credited with developing and patenting the world's first commercial microwave oven, the "Radarange", which was first sold in 1947. He based it on British radar technology which had been developed before and during World War II. Raytheon later licensed its patents ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2021 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1935 Births
Events January * January 7 – Italian premier Benito Mussolini and French Foreign Minister Pierre Laval conclude Franco-Italian Agreement of 1935, an agreement, in which each power agrees not to oppose the other's Colonial empire, colonial claims. * January 12 – Amelia Earhart becomes the first person to successfully complete a solo flight from Hawaii to California, a distance of . * January 13 – A plebiscite in the Saar (League of Nations), Territory of the Saar Basin shows that 90.3% of those voting wish to join Germany. * January 24 – The first canned beer is sold in Richmond, Virginia, United States, by Gottfried Krueger Brewing Company. February * February 6 – Parker Brothers begins selling the board game Monopoly (game), Monopoly in the United States. * February 13 – Richard Hauptmann is convicted and sentenced to death for the kidnapping and murder of Charles Lindbergh Jr. in the United States. * February 15 – The discovery and clinical developme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quora
Quora is an American social question-and-answer website and online knowledge market headquartered in Mountain View, California. It was founded on June 25, 2009, and made available to the public on June 21, 2010. Users can post questions, answer questions, and comment on answers that have been submitted by other users. As of 2020, the website was visited by 300million users a month. History Founding and naming Quora was co-founded by former Facebook employees Adam D'Angelo and Charlie Cheever in June 2009. In an answer to the question, "How did Adam D'Angelo and Charlie Cheever come up with the name Quora?" Cheever wrote: We spent a few hours brainstorming and writing down all the ideas that we could think of. After consulting with friends and eliminating ones we didn't love, we narrowed it down to 5 or 6 finalists, and eventually settled on Quora. The closest competition that he nameQuora had was Quiver. 2010–2013: Early growth In March 2010, Quora, Inc. was valu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Microwave Power Institute
The International Microwave Power Institute (IMPI) is an organization devoted to microwave energy and its usage. The organization has conducted surveys as well as educated the public to dispel microwave myths. Founded in Canada in 1966, it is now headquartered in Mechanicsville, Virginia. It was initially created for industrial and scientific purposes, however in 1977, IMPI's purpose was expanded to deal with the evolution of microwave oven for the home. The professional scientific journal In academic publishing, a scientific journal is a periodical publication designed to further the progress of science by disseminating new research findings to the scientific community. These journals serve as a platform for researchers, schola ... of IMPI is the '' Journal of Microwave Power and Electromagnetic Energy.'' References External linksOfficial website Engineering societies American engineering organizations Professional associations based in the United States Organizati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Standard
Safety standards are standards designed to ensure the safety of products, activities and processes, etc. Additional descriptive terms may help to clarify what hazards are being addressed, such as workplace safety standards (to keep workers safe), food safety standards (to verify that food is safe to eat), or consumer product safety standards (to ensure that manufacturers only sell products that are safe for consumers).They may be advisory or compulsory and are normally laid down by an advisory or regulatory body that may be either voluntary or statutory. In October 2021, a fire raging through multiple floors of a dilapidated apartment block in Kaohsiung highlighted the lax fire safety standards in Taiwan. China has recently experienced trouble with some of the post listed associations. Workplace Safety Standards Workplace safety standards are set by a number of different organizations depending on where people are located. The standards are designed to keep workers safe from haz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purdue University
Purdue University is a Public university#United States, public Land-grant university, land-grant research university in West Lafayette, Indiana, United States, and the flagship campus of the Purdue University system. The university was founded in 1869 after Lafayette, Indiana, Lafayette businessman John Purdue donated land and money to establish a college of science, technology, and agriculture; the first classes were held on September 16, 1874. Purdue University is a member of the Association of American Universities and is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very high research activity". Purdue enrolls the largest student body of any individual university campus in Indiana, as well as the ninth-largest foreign student population of any university in the United States. The university is home to the oldest computer science Purdue University Department of Computer Science, program in the United States. Pur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with a respective county. The city is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics, and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy. With an estimated population in 2024 of 8,478,072 distributed over , the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the nation's second-most populous city. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Chemistry
Physical chemistry is the study of macroscopic and microscopic phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibria. Physical chemistry, in contrast to chemical physics, is predominantly (but not always) a supra-molecular science, as the majority of the principles on which it was founded relate to the bulk rather than the molecular or atomic structure alone (for example, chemical equilibrium and colloids). Some of the relationships that physical chemistry strives to understand include the effects of: # Intermolecular forces that act upon the physical properties of materials ( plasticity, tensile strength, surface tension in liquids). # Reaction kinetics on the rate of a reaction. # The identity of ions and the electrical conductivity of materials. # Surface science and electrochemistry of cell m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
