- AskScience AMA Series: I am Fabien Cousteau, an Aquanaut, Oceanographic Explorer, Environmental Advocate, Documentary Filmmaker, Founder of the Fabien Cousteau Ocean Learning Center, and Grandson of Jacques Cousteau. Ask me anything!
- Why does rain have a smell before it starts to rain?
- During pregnancy, how does the mother's immune system know to avoid attacking the baby?
- What are the differences between Quantum Mechanics and Classical Mechanics, and how and why do they manifest?
- Are we the only animal to predominantly use one arm/hand?
- When I open my blinds in the morning, is it "too bright" for my eyes, the optical nerve, or the part of my brain interpreting the data? Where does the pain of bright light come from?
- If a person with light skin got a skin graft from a person with dark skin, would the skin color eventually change?
- How far away are we really from quantum computing?
- Do solid planets like Earth have a size/mass limit?
- How do computers decide random numbers?
- Does a woman truly share cells with her baby during pregnancy?
- Dying lake Chicago River green?
- Do fish drink water? Do they pee? How do they hydrate?
- Is it possible to create a device similar to an electronic device that uses photons instead of electrons?
- Do playing mind or strategy games like chess improve your IQ or brain performance?
- Why do we get white hair as we age?
- Does an object traveling at twice the speed of sound great a boom louder than an object traveling just slightly faster than the speed of sound?
- Do spider's spinnerets use quantum mechanics?
- Are Band-Pass Light Reflectors a Thing?
- Do minor head injuries damage the brain?
- What actually goes to sleep when we sleep?
- How is a vaccine made?
- Does hair grow at a constant rate?
| Posted: 15 Mar 2019 04:00 AM PDT As the first grandson of Jacques-Yves Cousteau, I spent my early years aboard my grandfather's famous ships, Calypso and Alcyone; learning how to scuba dive on my fourth birthday. I am known for my study of sharks and from 2000-2002, I was an Explorer-at-Large for National Geographic and collaborated on a TV special aimed at changing public conceptions about sharks called, "Attack of the Mystery Shark". Then in 2003-2006, I produced the documentary, "Mind of a Demon", that aired on CBS. With the help of a large crew, I created a 14-foot, 1,200-pound, lifelike shark submarine called "Troy" that allowed me to immerse myself inside the shark world, providing viewers with a rare view of the mysterious and often misunderstood creatures. This also led to the inspiration behind my new book, GREAT WHITE SHARK ADVENTURE. For the next four years (2006-2010), I was part of a multi-hour series for PBS called, "Ocean Adventures" with my father, Jean-Michel Cousteau, and sister, Celine. This was inspired by my grandfather's famous 1978 PBS series, "The Cousteau Odyssey". In the following years, and as a member of multiple cause-driven and charitable boards I have been working with local communities and children worldwide to help restore local water ecosystems. In June 2014, my team of aquanauts embarked on Mission 31, the longest science expedition to take place at Aquarius, the world's only underwater marine laboratory located in Florida. Mission 31 broke new ground in ocean exploration and honored the 50th anniversary of his grandfather's original underwater living experiment (Conshelf Two) by going deeper, longer and further, while broadcasting each moment live on multiple channels exposing the world to the adventure, drama and mystique of what lies beneath. Early in 2016 I founded the Fabien Cousteau Ocean Learning ("OLC") to fulfill my dream of creating a vehicle to make a positive change in the world. Last week, the first book in my new graphic novel series, GREAT WHITE SHARK ADVENTURE, came out from the Margaret K. McElderry Books, an imprint of Simon and Schuster Children's Publishing. You can learn more about me at my website, on Twitter, or on Facebook. I will be on about 2pm (ET, 18 UT), ask me anything! [link] [comments]  |
| Why does rain have a smell before it starts to rain? Posted: 17 Mar 2019 09:47 PM PDT |
| During pregnancy, how does the mother's immune system know to avoid attacking the baby? Posted: 17 Mar 2019 08:58 AM PDT |
| Posted: 18 Mar 2019 04:13 AM PDT The equation x̂(t) = x̂(0) + p̂(0) t/m is arrived at after applying the commutator value [x̂, p̂] = iħ to the Heisenberg Equation of Motion for position of a free mass which says dx̂/dt = i[Ĥ,x̂]. In classical mechanics, x and p can be determined simultaneously with infinite precision, that is to say, the Uncertainty relation, the Quantum Commutator is at the heart of which, does not exist in CM, and yet the classical analogue of the Quantum Commutator, the Poisson Bracket {x,p} = 1, leads to the same equation as above for the classical position of a free mass after using a classical Hamiltonian. So why do these apparent similarities lead to different (for ex., the abovementioned uncertainty principles, which I know arises due to Cauchy-Schwarz inequality restrictions on the Hilbert vector space, but what prevents this in CM vector spaces?) as well as similar (equation of motion) results? What actually makes CM different than QM? And what are some more such examples where CM and QM differ in results? [link] [comments]  |
| Are we the only animal to predominantly use one arm/hand? Posted: 18 Mar 2019 06:18 AM PDT |
| Posted: 17 Mar 2019 08:05 AM PDT |
| Posted: 17 Mar 2019 12:48 PM PDT |
| How far away are we really from quantum computing? Posted: 17 Mar 2019 09:41 PM PDT I feel like I keep seeing sensationalist articles on the implications, but it appears that there are still problems regarding scalability and other concepts I can't fully grasp. [link] [comments]  |
| Do solid planets like Earth have a size/mass limit? Posted: 17 Mar 2019 10:06 PM PDT After seeing a post showing the immensity of some stars, and even seeing how small we are compared to Jupiter I got to wondering; is there a limit to how big a hard surfaced object can be? And if so, what are the limiting factors? [link] [comments]  |
| How do computers decide random numbers? Posted: 17 Mar 2019 08:45 PM PDT |
| Does a woman truly share cells with her baby during pregnancy? Posted: 17 Mar 2019 09:41 PM PDT I was told that while pregnant my growing son's cells were replenishing or providing healing processes to any tissue and organs of mine that had been previously scarred or injured during my lifetime. I honestly don't feel any different, but apparently it's supposed to happen on a tiny cellular level. Is there any scientific evidence of this? [link] [comments]  |
| Dying lake Chicago River green? Posted: 18 Mar 2019 12:49 AM PDT Just wondering, what repercussions are there for dying the Chicago River green? It just doesn't seem like a very environmentally conscious decision [link] [comments]  |
| Do fish drink water? Do they pee? How do they hydrate? Posted: 17 Mar 2019 07:12 PM PDT |
| Posted: 17 Mar 2019 10:43 AM PDT |
| Do playing mind or strategy games like chess improve your IQ or brain performance? Posted: 17 Mar 2019 02:14 PM PDT |
| Why do we get white hair as we age? Posted: 17 Mar 2019 11:44 AM PDT |
| Posted: 17 Mar 2019 11:12 AM PDT |
| Do spider's spinnerets use quantum mechanics? Posted: 17 Mar 2019 10:02 PM PDT I was watching yet another story on a science show about the "spider goats" at Utah State University and it got me thinking about the amount of energy and fuel it takes for the facility to produce the silk. Spiders do this at room temperature and we haven't got a complete understanding of the process. Given the recent findings of quantum mechanics being utilised in photosynthesis, could a quantum process be the fundamental mechanic that allows for the generation of the silk protein to culminate into an effective biological process? [link] [comments]  |
| Are Band-Pass Light Reflectors a Thing? Posted: 17 Mar 2019 07:46 PM PDT I was recently thinking about a Mythbusters episode where they tested various methods of hiding a car's license plate from a camera. I realized that any method of attempting to block the plate within the visible spectrum are in vain as these would be plainly visible to the human eye, but I remembered reading that a cell phone (and I assume other cameras) could pick up the infrared light from a TV Remote due to being poorly filtered. My idea revolves around using an infrared LED array to shine on the license plate, but I'm worried that the black lettering might absorb light in the IR spectrum. I initially thought, ironically enough, that an IR filter might work, but upon research most sources seem to say that light filters simply absorb rather than reflect light. Addendum: I have no intention of using such a device without first researching its legality as I suspect it to be illegal. I might, however, do some testing as IR LEDs seem to be fairly cheap. For science, of course. [link] [comments]  |
| Do minor head injuries damage the brain? Posted: 17 Mar 2019 01:07 PM PDT I'm talking about the kind of thing where you hit your head and it hurts, but only for a few moments. Obviously there's a bit of damage being done to your scalp/skull, but is the brain being hurt at all? I remember hearing that a concussion is caused when the brain hits the inside of the skull because of a sudden change of motion in the whole head. So like, does a weak punch hurt the brain, or just the outside of my head? [link] [comments]  |
| What actually goes to sleep when we sleep? Posted: 17 Mar 2019 10:47 AM PDT Is it similar to when a computer is put to sleep? Since everything is still working, lungs, heart, brain, and such, as we sleep. Does anything turn off or it all just slows down enough that we won't die while sleeping. [link] [comments]  |
| Posted: 17 Mar 2019 01:01 PM PDT In light of the return of the measles, I got curious about how a vaccine is ACTUALLY physically made. I know that a vaccine contains a weaker version of the disease for the immune system to develop an immunity to it, but I also know there are other ingredients to it (I assume to weaken the virus?). It made me curious how it's put together? Is it boiled in a beaker? Or frozen? Or both? Do you store it at room temperature, or in a fridge? I know these are probably some silly questions, but I was just wondering about it. PS: I am pro-vaccine all the way, I'm not asking to collect evidence of "the evil vaccines." Was just curious. [link] [comments]  |
| Does hair grow at a constant rate? Posted: 17 Mar 2019 06:14 PM PDT I was wondering if hair grew at a constant rate. For instance, if I grew 1 inch of hair in a month after a haircut, would I expect 2 inches after the end of two months? If not, what are factors that affect hair growth rate? [link] [comments]  |
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