This art history video discussion looks at Winslow Homer's "The Life Line", 1884, oil on canvas, 28-5/8 x 44-3/4 inches / 72.7 x 113.7 cm (Philadelphia Museum of Art).
This art history video discussion looks at Edward Hopper's "Nighthawks", 1942, oil on canvas, 84.1 x 152.4 cm / 33-1/8 x 60 inches (The Art Institute of Chicago).
This art history video discussion looks at a "House Altar" depicting Akhenaten, Nefertiti and Three of their Daughters, limestone, New Kingdom, Amarna period, 18th dynasty, c.1350 BCE (Agyptisches Museum/Neues Museum, Staatliche Museen zu Berlin).
The unit “mole” is used in chemistry as a counting unit for measuring the amount of something. One mole of something has 6.02×1023 units of that thing. The magnitude of the number 6.02×1023 is challenging to imagine. The goal of this lesson is for students to understand just how many particles Avogadro's Number truly represents, or, how big is a mole. This lesson is meant for students currently enrolled in a first or second year chemistry course. This lesson is designed to be completed within one approximately 1 hour class; however, completion of optional activities 4 and 5 may require a longer class period or part of a second class period. This lesson requires only pencil and paper, as the activities suggested in this video place an emphasis on helping students develop their “back of the envelope” estimation skills. In fact, calculators and other measuring devices are explicitly discouraged. However, students may require additional supplies (poster board, colored pencils, markers, crayons, etc.) for the final optional/assessment activity, which involves creating a poster to demonstrate the size of a mole of their favorite macroscopic object.
This video is the second lesson in the How Cold Is Cold? BLOSSOMS series and examines the properties of materials under low temperature conditions. The video consists of a series of fascinating demonstrations with liquid nitrogen, which boils at 77K (-196 C -321 F). These demonstrations include the following: What goes up, may not come down; Is that supposed to be cold? - thermal insulation; Some properties of liquid nitrogen; Making ice cream - the slow way and the fast way; Try not to explode: expansion of liquid nitrogen and the ideal gas law; Making the air cold: phase changes and the affect on volume; No frozen fingers: the changes in mechanical properties; Resistivity at 77K; The magic magnet: the Meissner Effect; Cautions in using liquid nitrogen
This video lesson is part of a two-part series and introduces the concept of temperature. Temperature can be a challenging concept to convey since our perception is tied to words that are relative to our own experience, which varies quite a lot. A short activity to be performed in the classroom shows the need for a temperature scale since qualitative descriptions are not adequate. Temperatures that vary from the hottest to coldest recorded temperatures on earth are shown in advance of introducing the boiling temperatures of a number of cryogenic liquids.
The aim of this lesson is to introduce the concepts of heat and temperature, which many students find confusing. During the lesson, students will be asked to explore and discuss situations where even though the same amount of heat is absorbed by several substances, the increase in temperature of the substances is different. This video lesson presents a series of stories relating to heat and temperature, beginning with a visit to a factory where gamat oil is produced. In the video, a man dips his finger into boiling gamat oil yet feels no pain. The scene will draw students’ attention and raise their curiosity about how this is possible. Students will also carry out several experiments to compare and relate the situations where the same amount of heat absorbed by substances will result in different temperatures. By the end of this lesson, students will understand the term “specific heat capacity” and will recognize the difference between a high or low specific heat capacity. They will also understand the term “thermal diffusivity” and how this relates to the topic of the lesson. This lesson offers some authentic learning experiences where students will have the opportunity to relate the concept of heat and temperature to everyday situations. It will take about 50 minutes to complete - however, you may want to divide the lesson into two classes if the activities require more time.
Brief video describing where and how to find Open Educational Resources, including specific repositories and licences to look for.
This lesson is about the estimation of the value of Pi. Based on previous knowledge, the students try to estimate Pi value using different methods, such as: direct physical measurements; a geometric probability model; and computer technology. This lesson is designed to stimulate the learning interests of students, to enrich their experience of solving practical problems, and to develop their critical thinking ability. To understand this lesson, students should have some mathematic knowledge about circles, coordinate systems, and geometric probability. They may also need to know something about Excel. To estimate Pi value by direct physical measurements, the students can use any round or cylindrical shaped objects around them, such as round cups or water bottles. When estimating Pi value by a geometric probability model, a dartboard and darts should be prepared before the class. You can also use other games to substitute the dart throwing game. For example, you can throw marbles to the target drawn on the floor. This lesson is about 45-50 minutes. If the students know little about Excel, the teacher may need one more lesson to explain and demonstrate how to use the computer to estimate Pi value. Downloadable from the website is a video demonstration about how to use Excel for estimating Pi.
This art history video discussion looks at Jan (and Hubert?) Van Eyck's "Ghent Altarpiece or The Adoration of the Mystic Lamb", tempera and oil on panel, (closed panels), Cathedral of Saint Bavo, Ghent, Belgium, completed 1432. Second Life correspondents Max Newbold and Sez Zabelin, discuss the closed Ghent Altarpiece (see the next video for a discussion of the open altarpiece) on the Vassar campus in Second Life.
This art history video is the second part of the discussion about Jan (and Hubert?) Van Eyck's "Ghent Altarpiece or The Adoration of the Mystic Lamb", tempera and oil on panel, (open panels), Cathedral of Saint Bavo, Ghent, Belgium, completed 1432.
"The Human Controller" presents and discusses design and evaluation issues of human-machine interaction. The focus is on understanding human perception-action couplings (limitations, preferences, adaptation) and on quantifying control behavior of humans in the direct manual control loop of vehicles, robots or other man-made tools. Case studies from automotive, aviation, medical and tele-operation applications are discussed, with a special focus on the importance of including and enhancing haptics (=the sense of touch) during manual control.
This art history video discussion examines William Holman Hunt's "Claudio and Isabella", 1850, oil on mahogany (Tate Britain). From William Shakespeare's Measure for Measure, Act III, scene 1 (a room in a prison).
This art history video discussion looks William Holman Hunts "Our English Coasts ('Strayed Sheep')", 1852, oil on canvas, 432 x 584 mm (Tate Britain, London).
This art history video discussion looks William Holman Hunt's "The Awakening Conscience", 1853, oil on canvas, 762 x 559 mm (Tate Britain, London).
Relation of purpose of data to data requirements. Relation of data to costs.
Accuracy requirements of measurements and error propagation:
Related to a problem the required accuracy of measurements and the consequences for accuracy in the final result are discussed. Different types of errors are handled. Propagation of errors; for dependent and independent measurements, from mathematical relations and regression is demonstrated. Recapitulated is the theory of regression and correlation.
Interpretation of measurements, data completion: By standard statistical methods screening of measured data is performed; double mass analysis, residual mass, simple rainfall-runoff modelling. Detection of trends; split record tests, Spearman rank tests. Methods to fill data gaps and do filtering on data series for noise reduction.
Methods of hydrological measurements and measuring equipment: To determine quantitatively the most important elements in the hydrological cycle an overview is presented of most common hydrological measurements, measuring equipment and indirect determination methods i.e. for precipitation, evaporation, transpiration, river discharge and groundwater tables. Use, purpose and measurement techniques for tracers in hydrology is discussed.
Advantages and disadvantages and specific condition/application of methods are discussed. Equipment is demonstrated and discussed.
Areal distributed observation: Areal interpolation techniques of point observations: inverse distance, Thiessen, contouring, Kriging. Comparison of interpolation techniques and estimation of errors. Correlation analysis of areal distributed observation of rainfall
Design of measuring networks: Based on correlation characteristics from point measurements (e.g. rainfall stations) and accuracy requirements the design of a network of stations is demonstrated.
In dit college wordt een introductie gegeven van een groot aantal facetten van de scheepshydromechanica en hun onderlinge samenhang zoals die later in de studie meer als geisoleerde onderwerpen aan bod komen. Behandeld worden: de hydrostatica, de geometrie beschrijving van het schip, inleiding lijnenplan, het begrip stabiliteit, de stabiliteit van drijvende lichamen, eenvoudige stabiliteit berekening bij kleine helling hoeken, de weerstand van lichamen onder water en aan het oppervlak, eenvoudige weerstand benaderings methoden voor schepen, de model wetten in de hydromechanica, de extrapolatie methode van Froude, de lift van een vleugel, de vleugel karakteristieken, de toepassing hiervan bij voortstuwing en bij scheepsschroeven, de schroef karakteristieken en een eenvoudige schroef berekening, en tenslotte de fysica van het zeilen en zeilvoortstuwing. Leerdoelen De student kan: 1. de basis van systeem analyse beschrijven (buitenwereld, interfaces, beperkingen, objecten, relaties enz.) 2. maritieme systemen zoals schip/motor/schroef beschrijven en modelleren met behulp van beperkte systeem analyse methodologie; eenvoudige maritieme systemen modelleren door onderverdeling in subsystemen en componenten 3. evenwicht condities van maritieme systemen bepalen en kwalitatief analyseren 4. de definities en belangrijkste karakteristieken van weerstand, voortstuwing en manoeuvreren (snelheid, weerstand, vermogen, RPM, draaicapaciteit) begrijpen en toepassen 5. de relaties tussen algemeen vloeistof dynamica en scheepshydromechanica (bijv. lift/aerodynamica/zeilen; visceuze stroming/Reynolds getal/volgstroomvelden/voortstuwingsrendement; laminair & visceuze stroming/weerstand; niet visceuze stroming/golf patronen/weerstand) beschrijven 6. de achtergrond van de belangrijkste schaal regels (Newton, Froude, Reynolds) d.m.v dimensie analyse uitleggen 7. schaalregels voor schaalmodel experimenten in een sleeptank toepassen en potentiĚÇle complicaties identificeren
Fenomenologische beschrijving van de stroming om een schip classificatie van weerstandscomponenten en parametrische methoden voor de berekening van de scheepsweerstand. Daarnaast wordt uitgelegd hoe de scheepsweerstand experimenteel bepaald kan worden.
Voor scheepsschroeven wordt aangegeven hoe de complete geometrie beschreven kan worden, hoe de stuwkracht en koppel uit een parametrische beschrijving kan worden berekend m.b.v. een systematische schroevenserie en via een ideaal stromings model (actuator schijf). Een introductie in cavitatie (vorming van waterdamp gebieden) is onderdeel van de cursus.
This 7-minute video lesson looks at 2010 IIT JEE Paper 1 Problem 39.
This 7-minute video lesson continues to look at 2010 IIT JEE Paper 1 Problem 39.