Learn how sounds make their way from the source to your brain. To learn more about how we hear, visit the National Institute on Deafness and Other Communication Disorders at www.nidcd.nih.gov.
No matter what your deepest, darkest fear is, Fear Factor probably has a challenge that will send chills up (and down) your spine. Doubtful? Watch this and see for yourself.
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Take a look at our best and longest records, including old classics and new favourites. From the longest hair ever to the longest monster truck to the longest nails… well, you get the idea!
— At Guinness World Records we want to show that everyone in the world is the best at something, and we’re here to measure it! Whether you’ve got the stretchiest skin, know the world’s smallest dog or want to create the largest human dominoes chain we want to hear about it.
Here on the Guinness World Records YouTube channel we want to showcase incredible talent. If youre looking for videos featuring the worlds tallest, shortest, fastest, longest, oldest and most incredible things on the planet, youre in the right place.
From whirlpool turbines to edible cutlery, water blobs, and package-free shampoo and toothpaste, weve compiled a list of 22 inventions that could help us cut back on plastic, reduce garbage in the sea, and make the Earth a better place.
Editors Note: This video has been re-uploaded due to a disputed fact in the original video.
MORE SUSTAINABLE CONTENT:
Why Its So Hard To Make Plastic-Free Running Shoes youtu.be/7ukA_691j2U
How These Volunteers Are Fighting Soil Erosion youtu.be/WR5xO5uHgLE
How One Group Is Restoring Thousands Of Oysters To The New York Harbor youtu.be/Vau_CD8NmUY
— #Sustainability #Inventions #TechInsider
Tech Insider tells you all you need to know about tech: gadgets, how-tos, gaming, science, digital culture, and more.
Check out the CataractCoach channel @Uday Devgan for more!
We did a survey recently and about 20% of our viewers indicated that they wanted more videos of novice surgeons who are still learning basic techniques of cataract surgery. Todays video is a young surgeon who has only done about 30 cataract surgeries on his own and he is doing phaco stop-and-chop for nucleus removal.
The surgery is quite good for an ophthalmologist who is so early in the learning curve of phacoemulsification, but there are a few areas that could use refinement.
The excellent parts of the surgery are:
good draping and patient anesthesia
properly constructed incisions
excellent capsulorhexis and hydro-dissection
good ability to pivot within the incision and keep eye in primary
stop-and-chop technique is done very well
cortex removal is good and thorough
IOL is loaded well and centered in capsular bag
So much of the surgery is excellent, that we have just a few suggested areas of improvement:
since a cohesive OVD is used for the capsulorhexis, coating the corneal endothelium with dispersive OVD prior to inserting the phaco probe is recommended
allow the IOL haptics to unfold with the eye full of OVD instead of having the cold water from the I/A probe cause the lens to become less flexible
hydrate the incision in a linear manner at the corneal stroma to avoid having the two corners of the incision sealed while the central incision is not hydrated
This resident is sure to become a very talented surgeon and I look forward to operating with him over the course of the next year.