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Video
Can we make tattoos both beautiful and functional? Nanotechnologist Carson Bruns shares his work creating high-tech tattoos that react to their environment -- like color-changing ink that can tell you when you're getting a sunburn -- and shows exciting ways they can deliver real-time information about our health.
- Subjects:
- Health Technology and Informatics and Biology
- Keywords:
- Tattooing -- Health aspects
- Resource Type:
- Video
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Video
In 46 episodes, Phil Plait (aka The Bad Astronomer) teaches you astronomy! This course starts with the astronomical observations we can make with the naked eye and expands out to cover the solar system, stars, galaxies, and the universe itself. The content is loosely based on an introductory university-level curriculum. By the end of this course, you will be able to: * Define the components of the universe, from the planets in the Solar System to dark energy and gamma rays * Understand how astronomers collect and analyze data to study the past and current state of the universe * Explain the difference between asteroids, comets, and meteors * Contextualize observed phenomena within scientific theories about the history and physics of space, such as the Big Bang theory
- Subjects:
- Cosmology and Astronomy
- Keywords:
- Astronomy
- Resource Type:
- Video
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Video
In 40 episodes, Hank Green teaches you biology!
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Video
In 46 episodes, Hank Green will teach you chemistry! This course is mostly based on the 2012 AP Chemistry curriculum, but it also covers some introductory organic chemistry. By the end of the course, you will be able to: * Utilize the fundamental tools of chemistry, including the periodic table, nomenclature, and basic lab safety techniques * Understand the structure of matter * Predict and explain chemical reactions, and comprehend the many ways they affect our world * Reason through problems involving kinetics, thermodynamics, and chemical equilibrium * Recognize different organic chemicals and their uses
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Video
In 12 episodes, Hank Green teaches you ecology!
- Subjects:
- Environmental Sciences
- Keywords:
- Ecology
- Resource Type:
- Video
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Video
In 50 episodes, Dr. Deboki Chakravarti will teach you organic chemistry. This course is based on sophomore-level college material, covering topics from Organic Chemistry I and II. It was developed with 9 reference texts and journal articles on specialized topics in organic chemistry, in particular: Organic Chemistry texts by Brown, Foote, Iverson and Ansyln (8th ed.); Clayden, Greeves and Warren (2nd ed.); McMurry (9th ed.) By the end of this course, you will be able to: * Recognize and name the major functional groups in organic compounds * Understand the influence of molecular structure and conformation on chemical properties and reactivity * Identify the possible reactions for a given organic compound and select reasonable reaction mechanisms given the reactant structure and functional groups * Sketch a mechanism for an organic reaction, showing valid arrow-pushing and formal charges * Develop and compare synthetic routes to a target molecule from a starting compound * Interpret spectra (e.g. IR, NMR, MS, UV/vis) and understand how they are used in structure determination * Connect the chemical properties of organic compounds to their real-world applications (e.g. in polymers, medicine, and biochemistry).
- Subjects:
- Chemistry
- Keywords:
- Chemistry Organic
- Resource Type:
- Video
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Video
In 46 episodes, Dr. Shini Somara will help you find your place in the world -- literally! -- with physics. This course is based on introductory college-level material and the 2016 AP Physics I and II curriculum. By the end of this course, you will be able to: *Identify the fundamental forces describing the world and the core branches of physics *Pose, refine, and evaluate scientific questions *Connect phenomena and models across spatial and temporal scales *Use representations and models to communicate scientific phenomena and solve scientific problems *Apply mathematical equations that describe natural phenomena
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Video
In 44 episodes, Adriene Hill teaches you Statistics! This course is based on the 2018 AP Statistics curriculum and introduces everything from basic descriptive statistics to data collection to hot topics in data analysis like Big Data and neural networks. By the end of the course, you will be able to: *Identify questions that can be answered using statistics *Describe patterns, trends, associations, and relationships in data both numerically and graphically *Justify a conclusion using evidence from data, definitions, or statistical inference *Apply statistical models to make inferences and predictions from data sets *Understand how statistics are used broadly in the world and interpret their meaning, like in newspapers or scientific studies Learning playlist
- Subjects:
- Mathematics and Statistics
- Keywords:
- Statistics
- Resource Type:
- Video
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Video
This mini-lecture gives an overview on how scientists have applied biotechnology techniques to develop medical treatment and food production through the manipulation of DNA. The Faculty of Applied Science and Textiles (FAST) and the Institute of Textiles & Clothing (ITC) organized the mini-lecture series for more than three years. The lectures aim to enrich students' knowledge in creative perspectives and arouse their interest in Sciences, Fashion and Textiles. In view of the unpredictable development of the COVID-19 pandemic, the upcoming mini-lecture Series will be switched from face-to-face mode to online mode.
- Subjects:
- Biology
- Keywords:
- Biotechnology Genetic engineering DNA
- Resource Type:
- Video
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Video
What's so special about Leonardo da Vinci's Vitruvian Man? With arms outstretched, the man fills the irreconcilable spaces of a circle and a square -- symbolizing the Renaissance-era belief in the mutable nature of humankind. James Earle explains the geometric, religious and philosophical significance of this deceptively simple drawing.
- Subjects:
- History and Mathematics and Statistics
- Keywords:
- Mathematics -- Social aspects Vitruvian man (Leonardo da Vinci)
- Resource Type:
- Video
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Video
In this video we look at how to decide for a given scenario (worded problem) if the distribution described is a Binomial distribution or Poisson distribution and whether its probability distribution function or its cumulative distribution function is required to calculate a specified probability.
- Subjects:
- Mathematics and Statistics
- Keywords:
- Binomial distribution Probabilities Poisson distribution Distribution (Probability theory)
- Resource Type:
- Video
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Video
Designer and architect Neri Oxman is leading the search for ways in which digital fabrication technologies can interact with the biological world. Working at the intersection of computational design, additive manufacturing, materials engineering and synthetic biology, her lab is pioneering a new age of symbiosis between microorganisms, our bodies, our products and even our buildings.
- Subjects:
- Biotechnology and Chemical and Bioprocess Technology
- Keywords:
- Biotechnology Biosynthesis -- Industrial applications
- Resource Type:
- Video
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Video
Comparing initial rates to determine the order of reaction is a very common question in Kinetics.
Let's take a look at an example:
The objective is to choose a pair of experiments for comparison where the concentration of a reactant changes and ideally the concentration of other reactants remain constant. This means that any change in the initial rates of the experiments must be due to the change in the concentration of that reactant, and we can figure out the order from there.
1. Order of Reaction with respect to HCl
Comparing experiments 1 and 3, concentration of HCl doubles and there is no change in concentration of sucrose. So the change in initial rates must be due to HCl only. We can work out the change in initial rates to be 2 times. This means when concentration of HCl doubles, initial rate doubles. Therefore order of the reaction with respect to HCl will be order 1. For comparison, if order of reaction is zero, initial rate will remain unchanged when concentration of HCl doubles. If order of reaction is 2, initial rate will increase by 4 times (2^2 times) when concentration of HCl doubles. Since we only have 3 possible orders to consider, figuring out the order of reaction is quite straightforward.
2. Order of Reaction with respect to sucrose
Comparing experiments 1 and 2, concentration of sucrose increase by 1.5 times and there is no change in concentration of HCl. So the increase in initial rates by 1.5 times must be due to sucrose only. Since this is a proportionate increase, order of reaction with respect to sucrose is also order 1. Finally we can write out the rate equation for this reaction to be: rate = k [HCl][sucrose]
- Course related:
- ABCT 2701 Analytical Chemistry
- Subjects:
- Chemistry
- Keywords:
- Chemistry Physical theoretical
- Resource Type:
- Video
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Video
Learners follow the path of a carbohydrate food from consumption through digestion to absorption into the bloodstream. In a matching exercise, students identify the main type of carbohydrate found in four different foods.
- Subjects:
- Health Science and Food Science
- Keywords:
- Carbohydrates Disgestive organs
- Resource Type:
- Video
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Video
Learners take a close look at the information on product labels concerning fat, fiber, and serving sizes. A quiz follows the lesson.
- Subjects:
- Food Science
- Keywords:
- Food -- Labeling Nutrition
- Resource Type:
- Video
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Video
In this animated and interactive object, learners examine the inverse proportionality of wavelength and frequency and their relationship to the speed of light.
- Subjects:
- Chemistry
- Keywords:
- Electromagnetic waves
- Resource Type:
- Video
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Video
Engineering Mathematics tutorial series covers aspects of applied mathematics including: multivariable calculus; vector field theory; differential equations; Laplace transforms and Fourier series.
- Subjects:
- Mathematics and Statistics
- Keywords:
- Engineering mathematics
- Resource Type:
- Video
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Video
In this interactive object, learners calculate the amount of heat evolved or absorbed in chemical reactions. Four practice problems are provided.
- Subjects:
- Chemistry
- Keywords:
- Enthalpy Thermochemistry
- Resource Type:
- Video
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Video
Bees have been rapidly and mysteriously disappearing from rural areas, with grave implications for agriculture. But bees seem to flourish in urban environments -- and cities need their help, too. Noah Wilson-Rich suggests that urban beekeeping might play a role in revitalizing both a city and a species.
- Subjects:
- Environmental Sciences and Biology
- Keywords:
- Honeybees
- Resource Type:
- Video
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Video
Planet Earth is this solid thing you are standing on right now. In your everyday life you don't really waste a thought about how amazing this is. A giant, ancient, hot rock. How did it come into existence and how big is it really? You will be surprised. The ground you are standing on is just a very, very small part of the big picture.
- Course related:
- LSGI1D03 Living on a Dynamic Earth
- Subjects:
- Environmental Sciences
- Keywords:
- Earth sciences
- Resource Type:
- Video