6.630 is an introductory subject on electromagnetics, emphasizing fundamental concepts and applications of Maxwell equations. Topics covered include: polarization, dipole antennas, wireless communications, forces and energy, phase matching, dielectric waveguides and optical fibers, transmission line theory and circuit concepts, antennas, and equivalent principle. Examples deal with electrodynamics, propagation, guidance, and radiation of electromagnetic waves.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Molecular signaling pathways are crucial for cellular function and communication. In order to work properly, the pathways must be sensitive, adaptable, and tunable to specific stimuli and situations. These essential qualities are made possible by intrinsically disordered proteins (IDPs). IDPs can’t fold into stable, defined structures on their own, but many IDPs can gain at least some structure when they bind with specific partners. These and other interactions change the IDPs’ conformations to enable specific and reversible binding, giving the signaling pathways the sensitivity and flexibility they need to function correctly. Algorithms and other computational tools can help identify IDPs and predict their functions. So far, such tools have revealed that IDPs are pervasive in all kingdoms of life. In addition, they’ve shown that IDPs help relay signals from diverse stimuli, such as ions, lipids, proteins, chemicals, and environmental cues in every category of cell signaling pathway and at every step..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Les ondes, comme phénomène, sont omniprésentes et familières, mais leur constitution comme phénomène physique pose des difficultés bien connues. dues à leur nature pour ainsi dire insaisissable : quelque chose se déplace, qui contient de l'information et de l'énergie,mais ce n'est pas de la matière. Comment le caractériser?Quelles grandeurs physiques lui associe-t-on?Quels sont les comportements génériques des ondes? dans cette  première approche du phénomène.    

This lesson presents an overview of how plants are propagated. Upon completion of this unit students will know how to propagate plants both sexually and asexually. 

Published by the UC Santa Cruz Center for Agroecology and Sustainable Food Systems, the 600-page manual covers practical aspects of organic farming and gardening, applied soil science, and social and environmental issues in agriculture. Units contain lecture outlines for instructors and detailed lecture outlines for students, field and laboratory demonstrations, assessment questions, and annotated resource lists. Although much of the material has been developed for field or garden demonstrations and skill building, most of the units can also be tailored to a classroom setting.The training manual is designed for a wide audience of those involved in teaching farming and gardening, including colleges and universities with programs in sustainable agriculture, student farms or gardens, and on-farm education programs; urban agriculture, community garden, and farm training programs; farms with internships or apprenticeships; agriculture extension stations; school gardening programs; organizations such as the Peace Corps, US AID, and other groups that provide international training in food growing and ecological growing methods; and master gardener programs.

This course is offered to graduate students and addresses issues regarding ultrafast optics. Topics covered include: Generation, propagation and applications of ultrashort pulses (nano-, pico-, femto-, attosecond pulses); Linear and nonlinear pulse shaping processes: Optical solitons, Pulse compression; Laser principles: Single- and multi-mode laser dynamics, Q-switching, Active and passive mode-locking; Pulse characterization: Autocorrelation, FROG, SPIDER; Noise in mode-locked lasers and its limitations in measurements; Laser amplifiers, optical parametric amplifiers, and oscillators; Applications in research and industry: Pump-probe techniques, Optical imaging, Frequency metrology, Laser ablation, High harmonic generation.

This activity is a gentle introduction to modeling via differential equations. The students will model the rate at which the word jumbo has propagated through English language texts over time.