freedive spearfishing black out- ben choi
Bookmarked 544 weeks ago
on sunday october 12 i blacked out while freedive spearfishing i was coming up from a 71ft dive during which i had shot a mangrove snapper my dive time was 1:12 i had done a surface interval of 4 minutes before this dive we had been diving that depth 65 most of the day chasing those mangrove snapper everything about the dive felt comfortable to me i didnt feel any more fatigued than i normally do when coming up from that depth after shooting a fish as i hit the surface the last thing i remember is exhaling the next thing i remember is my buddy sterling shaking me and not being able to speak because my mouth was full of wateri had my reservations about posting this video online but after some encouragement from my close friends and dive buddies i am posting this so that the spearfishing community can learn from this incident the lesson i want people to take away from this video is that a black out can happen at any time it doesnt have to be a 100 freedive it doesnt have to be a 2 min dive it can happen on a routine dive that youve been doing all day we all know the risks that are involved in our sport the only way to mitigate these risks is to implement a good safety system with a buddy watching you every dive i never thought that a black out would happen to me i always thought that i wasnt diving deep or long enough for a black out but the fact of the matter is you never know when its going to happen thankfully i had sterling there to save me he did exactly what a good dive buddy should in this situation and had my head out of the water in a matter of seconds if he hadnt been around me and if we hadnt been buddy diving i probably wouldnt be here to tell the story you can do everything right in a dive and black out i didnt stay too long i didnt go too deep i didnt drink the night before i got plenty of rest i have been running 3-4 miles every other day and was in good physical shape i drank two bottles of water on the way out i had a surface interval 4x my dive time after consulting with some freediving instructors i have realized that my breathe up wasnt optimal and that instead of purging which i thought i was doing i was hyperventilating on my breathe upi hope that this video will make the spearfishing community a lot more aware of just how easy it is to black out and how critically important it is that we dive with a good buddy system at all times i really want the next generation of young freedivers to take note of this you may think that it will never happen to you but it hits you like a ton of bricks when you realize that you could have very easily died that day stick with your buddies keep an eye on them when yall are diving dont be so focused on out shooting them or getting a trophy fish that you lose sight of them competition between friends is good but everyone making it back home safe is a lot better i welcome your thoughts and comments on this video and i hope that this reinforces the need for an attentive buddy system while spearfishing feel free to share this with your fellow spearos and lets get a constructive discussion going about how to dive safer and get everyone home to their loved onesturn up the volume when playing the video

the world039s thinnest mechanical keyboard
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they say it039s the world039s thinnest mechanical keyboardkeychron - https:wwwkeychroncomwatch some more videosnike adapt bb unboxing - futuristic self lacing sneakershttps:youtubehvioyzvmiwsthey call it an invisible laptop standhttps:youtubestns1awpgxgthe most insane 40000 gaming setuphttps:youtubend33s6c4lwcgalaxy s10 pricing revealed - this could be a problemhttps:youtubeqoojhmuhhwuunboxing the 1300 bluetooth speakerhttps:youtubeijue4uvwvoodave2d says don039t buy these laptopshttps:youtubeeaodw4sjcyilose weight without exercisehttps:youtubek76l9twdfh0oneplus beats iphone in indiahttps:youtubejdxqzw8qgrsthe flashiest smartphone everhttps:youtubep87s4dramradon039t make this airpods mistakehttps:youtube5a8m6illczmthe best selling wireless speaker on amazonhttps:youtuben826ttjwxu4your iphone has been compromisedhttps:youtube5afkticv2aqis this laptop too quotextremequothttps:yout

ap da don - dash of black prod by jcitypiccolo
Bookmarked 515 weeks ago
https:wwwfacebookcomsubstanceoversurface after another year of black history month coming and going ap da don presents quotdash of blackquot a songvideo influenced by his lovehate relationship with the direction african americans are headed in as well as and black history month he realizes black history is american history and should be heavily ingrained in american historical text as well as our education system listen and watch closely as he touches on the power of unity honoringsupporting one another and many hypocrisies that plague the black community in america including the consistent divide that seems to begin from within help us spread this substance year around in an attempt to impact those who can benefit from this message location: paterson new jersey credits: video shot amp edited by kyle avery co-directed by jerry quotsos - jpquot palmer song produced by piccolo jcitypiccolo

green green i am green with lyric extrasolar system kepler-22b nursery rhymes song
Bookmarked 328 weeks ago
green green i am green with lyricltbrgtltbrgtthis is a story about a kepler-22b is an extrasolar planet orbiting within the habitable zone of the sun-like star kepler-22 it is located about 587 light-years 180 pc from earth in the constellation of cygnus it was discovered by nasa039s kepler space telescope in december 2011 and was the first known transiting planet to orbit within the habitable zone of a sun-like star kepler-22 is too dim to be seen with the naked eyeltbrgtkepler-22b is an extrasolar planet orbiting around the star kepler-22ltbrgtits radius is roughly 24 times that of earth its size is roughly twice that of earth its mass and surface composition are unknown an earth-like composition for the planet has been ruled out it is likely to have a volatile-rich composition with a liquid or gaseous outer shell the only parameters of the planet039s orbit that are currently available are its orbital period which is about 290 days and its inclination which is approximately 90 evidence

a young woman with long legs looks so sexy on the bed
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watch a young woman with long legs looks so sexy on the bed in 4k ultra hd

lumileds luxeon 7070
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https:wwwfutureelectronicscomsearchtext=l170-ampq=l170-:relevance:category:high-power-led-emitters-revampselectedtab=productsampselectedparentcategory=high-power-led-emitters-rev luxeon 7070 is a multi-die high power package that provides high luminance from a super robust package to enable cost effective single optic and directional fixture designs luxeon 7070 uses an industry standard 7070 surface mount package with a small light emitting surface les https:youtube4xl7vfs97h0

boatbuilding - lining-out for planking ep78 - youtube
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rebuilding a historic sailing yacht - lining-out for planking ep78 support http:wwwsampsonboatcouksupport become a patron http:wwwpatreoncomsa

cheap milling machine vise is cheap - youtube
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this is a story about a kid and a milling machines039 hapless encounter with ebay039s siren song how does the new vise check out not that great but also not

paramotor collapse and crash details in description
Bookmarked 347 weeks ago
take aways:- be cognizant of an over eagerness to fly- check winds early and often- have a plan if conditions are not as expected- know your equipment and take a siv course if able- set personal limits and boundaries before flying and honor them- altitude can be your friend- fly with a buddymy buddy and i dont get to fly much together and we were excited to go fly we planned on going in the evening but canceled for winds but the early morning forecast looked perfect we launched before 7am on a calm surface but a few hundred feet up winds were picking up i checked winds the night prior but i did not check winds beyond surface and 1000039 that morning at launch they were calm on the surface and treetops were dead still i launched and waited for him to launch and stated winds were noticeable in the climb at about 300 feet but nothing we havent experienced before again no one rechecked checked winds as we were excited to fly we cruised out to the lake and the ride seemed to improve

land temperature anomaly video
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for more information about this study visit http:berkeleyearthorg berkeley earth video representation of the land surface temperature anomaly 1800 to the present the map of the world shows the temperature anomaly by location over time the chart at the bottom shows the global land-surface temperature anomaly the berkeley earth analysis shows 0911 degrees centigrade of land warming - 0042 c since the 1950s

next-generation conferencing system with media hub capability : diginfo
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diginfo tv - http:diginfotv3122010pioneer solutionsdiscussion table

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using lasers to create super-hydrophobic materials
Bookmarked 582 weeks ago
scientists at the university of rochester have used lasers to transform metals into extremely water repellent or super-hydrophobic materials without the need for temporary coatings super-hydrophobic materials are desirable for a number of applications such as rust prevention anti-icing or even in sanitation uses however as rochesters chunlei guo explains most current hydrophobic materials rely on chemical coatings in a paper http:scitationaiporgcontentaipjournaljap117310106314905616 published today in journal of applied physics guo and his colleague at the universitys institute of optics anatoliy vorobyev describe a powerful and precise laser-patterning technique that creates an intricate pattern of micro- and nanoscale structures to give the metals their new properties this work builds on earlier research by the team in which they used a similar laser-patterning technique that turned metals black http:wwwrochesteredunewsshowphpid=2701 guo states that using this technique they can create multifunctional surfaces that are not only super-hydrophobic but also highly-absorbent opticallyguo adds that one of the big advantages of his teams process is that the structures created by our laser on the metals are intrinsically part of the material surface that means they wont rub off and it is these patterns that make the metals repel waterthe material is so strongly water-repellent the water actually gets bounced off then it lands on the surface again gets bounced off again and then it will just roll off from the surface said guo professor of optics at the university of rochester that whole process takes less than a second the materials guo has created are much more slippery than teflona common hydrophobic material that often coats nonstick frying pans unlike guos laser-treated metals the teflon kitchen tools are not super-hydrophobic the difference is that to make water to roll-off a teflon coated material you need to tilt the surface to nearly a 70-degree angle before the water begins to slide off you can make water roll off guos metals by tilting them less than five degreesas the water bounces off the super-hydrophobic surfaces it also collects dust particles and takes them along for the ride to test this self-cleaning property guo and his team took ordinary dust from a vacuum cleaner and dumped it onto the treated surface roughly half of the dust particles were removed with just three drops of water it took only a dozen drops to leave the surface spotless better yet it remains completely dry guo is excited by potential applications of super-hydrophobic materials in developing countries it is this potential that has piqued the interest of the bill and melinda gates foundation which has supported the work in these regions collecting rain water is vital and using super-hydrophobic materials could increase the efficiency without the need to use large funnels with high-pitched angles to prevent water from sticking to the surface says guo a second application could be creating latrines that are cleaner and healthier to uselatrines are a challenge to keep clean in places with little water by incorporating super-hydrophobic materials a latrine could remain clean without the need for water flushing but challenges still remain to be addressed before these applications can become a reality guo states it currently takes an hour to pattern a 1 inch by 1 inch metal sample and scaling up this process would be necessary before it can be deployed in developing countries the researchers are also looking into ways of applying the technique to other non-metal materials guo and vorobyev use extremely powerful but ultra-short laser pulses to change the surface of the metals a femtosecond laser pulse lasts on the order of a quadrillionth of a second but reaches a peak power equivalent to that of the entire power grid of north america during its short burstguo is keen to stress that this same technique can give rise to multifunctional metals metals are naturally excellent reflectors of light thats why they appear to have a shiny luster turning them black can therefore make them very efficient at absorbing light the combination of light-absorbing properties with making metals water repellent could lead to more efficient solar absorbers solar absorbers that dont rust and do not need much cleaningguos team had previously blasted materials with the lasers and turned them hydrophilic meaning they attract water in fact the materials were so hydrophilic that putting them in contact with a drop of water made water run uphill http:wwwrochesteredunewsshowphpid=3387help us caption ampamp translate this videohttp:amaraorgvga08

the surface is pure and clean at the beginning i was a li shy quotplease fuck mequot
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watch the surface is pure and clean at the beginning i was a li shy quotplease fuck mequot in full hd

introducing windows 95 mobile - youtube
Bookmarked 276 weeks ago
a major update for microsoft phones