This art history video discussion examines Hieronymus Bosch's "Last Judgment Triptych", 1504-08, Akademie fur bildenden Kunste, Vienna, overall dimensions.

Botticelli, La Primavera (Spring), 1481-1482, tempera on panel, 80 x 123 1/2" (203 x 314), Uffizi, Florence Speakers: Dr. Beth Harris and Dr. Steven Zucker http://khan.smarthistory.org/botticelli-primavera.html. Created by Beth Harris and Steven Zucker.

This art history video discussion examines Francois Boucher's "Madame de Pompadour", oil on canvas, 1750 (extention of canvas and additional painting likely added by Boucher later, Fogg Museum.

David shows how to use conservation of momentum for a situation where two objects bounce off of each other. Created by David SantoPietro.

Overview of how chromosomes were first proposed as the carriers of Mendel's "heritable factors" (what we now call "genes").

Donato Bramante, Tempietto, c. 1502, San Pietro in Montorio, Rome. Created by Beth Harris and Steven Zucker.

Numerous architects (see below), Saint Peter's Basilica (Basilica Sancti Petri in Latin) begun 1506 completed 1626, Vatican City. Architectural contributors include: Donato Bramante who's design won Julius II's competition Antonio da Sangallo, a student of Bramante, designed the Pauline Chapel Fra Giocondo strengthened the foundation Raphael worked with Fra Giocondo, his redesigned building plan was not executed Michelangelo designed the dome, crossing, and exterior excluding the nave and facade Giacomo della Porta, designed the cupola Carlo Maderno, extended Michelangelo's plan adding a nave and grand facade Gian Lorenzo Bernini added the piazza, the Cathedra Petri, and the Baldacchino Speakers: Dr. Beth Harris and Dr. Steven Zucker. Created by Beth Harris and Steven Zucker.

Constantin Brancusi, Bird in Space, bronze, limestone, wood, 1928 (MoMA) Speakers: Dr. Steven Zucker, Dr. Beth Harris. Created by Beth Harris and Steven Zucker.

Georges Braque, Le Viaduc à L'Estaque, (The Viaduct at L'Estaque), 1908, oil on canvas, 28-5/8 x 23-1/4 inches or 72.5 x 59 cm (Musée national d'art moderne, Centre Pompidou, Paris). Speakers: Dr. Beth Harris and Dr. Steven Zucker.

Mexica brazier of Chicomecoatl, c. 1500, ceramic, found in Tláhuac (south of Mexico City), 104 cm high (Museo Nacional de Antropología, Mexico City) A conversation between Dr. Lauren Kilroy-Ewbank and Dr. Steven Zucker. Created by Smarthistory.

Sal explains how to draw free body diagrams when forces are applied at an angle. How to find horizontal and vertical components of an angled force using trigonometry.

Created by Getty Museum and the Colección Patricia Phelps de Cisneros. Discover how Argentine and Brazilian artists in the 1940s broke from linear perspective to create art in unique shapes, starting the Concrete Art movement. This video is one of three that accompanied the “Making Art Concrete: Works from Argentina and Brazil in the Colección Patricia Phelps de Cisneros” (September 16, 2017 – February 11, 2018) at the Getty Museum. For more information visit http://www.getty.edu/art/exhibitions/cisneros. Created by Getty Museum.

Marcel Breuer, The Whitney Museum of American Art (now The Met Breuer), 1963-66, Madison Avenue at East 75th Street, NYC Speakers: Dr. Naraelle Hohensee and Dr. Steven Zucker. Created by Beth Harris and Steven Zucker.

Bronze doors, 1015, commissioned by Bishop Bernward for Saint Michael's, Hildesheim (Germany). A conversation with Dr. Nancy Ross and Jennifer Freeman. Created by Beth Harris and Steven Zucker.

Met curator Seán Hemingway on the purity of love in Bronze statue of Eros sleeping from Greece’s Hellenistic Period, 3rd–2nd century B.C.E. The Hellenistic period introduced the accurate characterization of age. Young children enjoyed great favor, whether in mythological form, as baby Herakles or Eros, or in genre scenes, playing with each other or with pets. This Eros, god of love, has been brought down to earth and disarmed, a conception considerably different from that of the powerful, often cruel, and capricious being so often addressed in Archaic poetry. One of the few bronze statues to have survived from antiquity, this figure of a plump baby in relaxed pose conveys a sense of the immediacy and naturalistic detail that the medium of bronze made possible. He is clearly based on firsthand observation. The support on which the god rests is a modern addition, but the work originally would have had a separate base, most likely of stone. This statue is the finest example of its kind. Judging from the large number of extant replicas, the type was popular in Hellenistic and, especially, Roman times. In the Roman period, Sleeping Eros statues decorated villa gardens and fountains. Their function in the Hellenistic period is less clear. They may have been used as dedications within a sanctuary of Aphrodite or possibly may have been erected in a public park or private, even royal, garden.

Agnolo di Cosimo Bronzino, An Allegory with Venus and Cupid, c. 1545, oil on panel, 146.1 x 116.2 cm (National Gallery, London) Speakers: Dr. Beth Harris and Dr. Steven Zucker.

Bronzino, Portrait of Eleonora di Toledo with her son Giovanni, 1544-1545, oil on panel, 115 x 96 cm (Galleria degli Uffizi). Created by Beth Harris and Steven Zucker.

Bronzino Portrait of a Young Man, oil on panel, 1530s (Metropolitan Museum of Art) and Bronzino, Lodovico Capponi, Oil on panel, 1550-55 (Frick Collection) Speakers: David Drogin and Beth Harris. Created by Beth Harris and Steven Zucker.