How do contraceptives work? - NWHunter

source: TED-Ed     2016年9月19日
View full lesson: http://ed.ted.com/lessons/how-do-cont...
Contraceptives are designed to prevent pregnancy in three basic ways: they either block sperm, disable sperm before they reach the uterus, or suppress ovulation. But is one strategy better than the other? And how does each one work? NWHunter describes the mechanics behind different kinds of contraceptives.
Lesson by NWHunter, animation by Draško Ivezić.

Roger Moore: Fluids and Waves / U of Alberta

# click the up-left corner to select videos from the playlist 

source: Roger Moore     2013年12月23日
PHYS 146: Fluids and Waves at the University of Alberta. For the iBook on the course go to:
https://itunes.apple.com/us/book/flui...

Elasticity part 1: Stress and Strain This lecture introduces the concept of elasticity and covers the definitions of different types of mechanical stress and strain. 32:23
Elasticity part 2: Young's Modulus 36:45
Elasticity part 3: Moduli of Elasticity 22:40
Elasticity part 4: Elastic Limits 20:19
Fluid Statics, part 1: Pressure and Density 12:33
Fluid Statics part 2: Static Pressure 26:15
Fluid Statics, part 3: Pressure Gauges 18:41
Fluid Statics, part 4: Buoyancy 19:32
Fluid Dynamics, part 1: Fluid Flow 14:57
Fluid Dynamics, part 2: Bernoulli's Equation 25:54
Fluid Dynamics, part 3: Viscosity 16:10
Oscillations Part 1: Derivation of Simple Harmonic Motion 26:01
Oscillations Part 2: SHM Parameters 17:24
Oscillations Part 3: Phasors 28:29
Oscillations Part 4: Kinematics and Energy 30:58
Oscillations Part 5: Pendulums 26:50
Oscillations Part 6: Damped Oscillators 34:16
Oscillations Part 7: Driven Oscillators 17:53
Oscillations Part 8: Resonance 31:56
Waves part 1: Wave Types and Properties 25:28
Waves part 2: The Wave Equation 17:51
Waves part 3: Solving the Wave Equation 26:01
Waves part 4: Waves on a String 29:10
Waves part 5: Acoustic Waves 20:47
Waves part 6: Wave Intensity 13:10
Waves part 7: Superposition 26:04
Waves part 8: Interference 29:41
Waves part 9: Standing Waves 36:37
Waves part 10: The Doppler Effect 25:57
Light Waves part 1: Reflection and Refraction 32:45
Light Waves part 2: Lenses 30:32
Light Waves part 3: The Lens Equation 24:43
Light Waves part 4: Dispersion 32:58
Light Waves part 5: Polarization 22:26
Light Waves part 6: Interference 36:25
Light Waves part 7: Diffraction at Slits 34:49
Light Waves part 8: Diffraction Grating 24:07

The Nature of Psi with Vernon Neppe

source: New Thinking Allowed    2016年5月5日
Vernon Neppe, MD, PhD, FRSSAf, is a neuropsychiatrist and head of the Pacific Neuropsychiatric Institute in Seattle. He is a former president of the South African Society for Psychical Research. He is author, with physicist Edward Close, of Reality Begins with Consciousness: A Paradigm Shift that Works, and author of Déjà Vu Revisited, Déjà Vu: A Second Look, Déjà Vu: Glossary and Library, Cry the Beloved Mind: A Voyage of Hope, and Innovative Psychopharmacotherapy. His professional publications number over 700. Dr Neppe has amplified many of his concepts in two of the websites linked with his work. On www.Brainvoyage.com, his books are amplified. www.VernonNeppe.org is his gateway and includes more information on the Neppe-Close model of the Triadic Distinction Vortical Paradigm.
Here, Dr. Neppe describes areas of psi research that have all achieved statistical significance at the six sigma level. These include remote viewing, random event generator research, the global consciousness project, the ganzfeld studies, studies on the sense of being stared at, and feeling the future studies based on the work of Daryl Bem, presentiment studies. Neppe also includes some research in the area of survival after death. All of this research shows that human consciousness is capable of interacting with the physical world in ways that bypass the normal sensory and motor systems of the body. Neppe presents a single, multi-dimensional model that could account for psi.

New Thinking Allowed host, Jeffrey Mishlove, PhD, is author of The Roots of Consciousness, Psi Development Systems, and The PK Man. Between 1986 and 2002 he hosted and co-produced the original Thinking Allowed public television series. He is the recipient of the only doctoral diploma in "parapsychology" ever awarded by an accredited university (University of California, Berkeley, 1980). He is also past-president of the non-profit Intuition Network, an organization dedicated to creating a world in which all people are encouraged to cultivate and apply their inner, intuitive abilities.
(Recorded on April 15, 2016)

Science and Religion: Why Does the Debate Continue? (by Alvin Plantinga)

source: Yale University     2014年12月12日
Dwight H. Terry Lectureship September 15, 2006
Alvin Plantinga is a contemporary American philosopher known for his work in epistemology, metaphysics, and the philosophy of religion.
The Dwight H. Terry Lectureship celebrated its 100th anniversary with a two-day conference entitled “The Religion and Science Debate: Why Does It Continue?” Public Broadcasting System journalist Margaret Warner moderated the closing panel of the two-day symposium.
A book based on the conference, The Religion and Science Debate: Why Does It Continue? is available from Yale University Press.

TELEHEALTH: How New Technologies Are Transforming Health Care

source: Harvard University     2015年5月18日
Telehealth combines telecommunications and health systems to deliver care and support across distances. However, this simple definition belies the complexity of this rapidly evolving field. A cadre of increasingly sophisticated technologies — matched with a need to reduce healthcare costs, serve more patients, and improve quality — drives the field in both high-income and low-income countries. Panelists in this Forum event examined aspects of telehealth in the U.S., including doctor and patient buy-in and the impact of the Affordable Care Act, and in other high-income countries. They also took a look at the role of telehealth in low-income countries, where technologies such as mobile phones can serve as vital tools for healthcare workers to ensure and evaluate standards of care in the diagnosis and treatment of common illnesses.

Part of The Dr. Lawrence H. and Roberta Cohn Forums, this webcast was presented May 15, 2015 in collaboration with The Huffington Post.
Watch the entire series from The Forum at Harvard T.H. Chan School of Public Health at www.ForumHSPH.org.
Image Credit: ©iStock.com/feellife

Why Can't Mules Have Babies?

source: MinuteEarth     2016年8月23日
Thanks to The Great Courses Plus for sponsoring this video. You can start your subscription with a free one-month trial today by visiting http://ow.ly/Yq7c302duah
Hybrid animals are infertile because of the way their sex cells form. But sometimes, life finds a way.

FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some handy keywords to get your googling started:
- Hybrid organisms: The offspring of two animals or plants of different breeds, varieties, species or genera.
- Mitosis: A process of cell division that produces copies of the original cell.
- Meiosis: A process of cell dividion that produces new daughter cells with half the chromosome number of the original cell.
- Sex cell, or gamete: a cell that fuses with another cell during fertilization (conception) in organisms that sexually reproduce.
- Hemiclonal transmission: The rare occurence in which only maternal DNA gets passed along during the creation of sex cells.

Species featured in this video:
- Mule, is the offspring of a male donkey (jack) and a female horse (mare)
- Liger, is a hybrid cross between a male lion (Panthera leo) and a female tiger (Panthera tigris)
- Zonkey, is the offspring of a zebra and a donkey. Zebra hybrids are generally known as zebroids
- Beefalo, also known as cattalo, is the offspring of a domestic cattle (Bos taurus) and an American buffalo (Bison bison)
- Cama, is the offspring of a male dromedary camel and a female llama.

Erich Fromm: The Automaton Citizen and Human Rights (1-3)

source: Eidos84      2010年12月11日
Erich Fromm lectures on 'The Automaton Citizen and Human Rights', at the American Orthopsychiatric Association (1966). Fromm discusses the importance of psychiatry and clinical psychology in examining the individual's experience of alienation in modern consumer society. For Fromm, alienation is fundamentally opposed to the basic human right 'to be one's self'. As regards psychology, Fromm claims 'that the psychiatrist and the clinical psychologist have an important task - that is, not to be over-impressed by individual sickness but to think of man as a total being, and of applying their basic findings to the pathology of normalcy which threatens to undermine the very rights which we are so proud of having achieved.'