When wireless networking based around the 802.11b standard first hit consumer markets in the late nineties, it looked pretty good on paper. Promising "11 Mbps" compared to original wired Ethernet's 10 Mbps, a reasonable person might have thought 802.11b was actually faster than 10Mbps wired Ethernet connections. It was a while before I was exposed to wireless networking—smartphones weren't a thing yet, and laptops were still hideously expensive, underpowered, and overweight. I was already rocking Fast Ethernet (100 Mbps) wired networks in all my clients' offices and my own house, so the idea of cutting my speed by 90 percent really didn't appeal. In the early 2000s, things started to change. Laptops got smaller, lighter, and cheaper—and they had Wi-Fi built in right from the factory. Small businesses started eyeballing the "11Mbps" that 802.11b promised and deciding that 10Mbps had been enough for them in their last building, so why not just go wireless in … [Read more...] about 802.eleventy what? A deep dive into why Wi-Fi kind of sucks
Omni channel testing
Making a baby seems to rely on bumbling, crawling sperm, new research suggests, putting the kibosh on the popular notion that sperm are strong swimmers, whipping their tails back and forth to navigate though the uterus toward their ultimate goal of infiltrating the egg.By studying sperm in tiny channels, researchers have discovered their travels can be arduous; instead of swimming merrily through the uterus, sperm cells tend to follow the walls of the reproductive tract, crawling along and inching around corners, frequently colliding with each other and with the walls."I couldn't resist a laugh the first time I saw sperm cells persistently swerving on tight turns and crashing head-on into the opposite wall of a micro-channel," study researcher Petr Denissenko, of the University of Warwick, in the United Kingdom, said in a statement. [5 Myths About the Male Body]Hugging wallsAs sperm navigate the female reproductive tract, they must negotiate complex, convoluted channels of tissue, … [Read more...] about Sperm Act Like Bumbling Drunks on Way to Egg
We may earn a commission for purchases using our links. Learn more. Mesh head-to-head Don't mesh up this decision. Nicholas Sutrich 11 Nov 2019 Talk to me Nest Wifi Free VPN and more Ubiquiti AmpliFi HD Nest Wifi is the second-generation mesh wireless system from Google. Aside from a major style change over the original Google Wifi, Nest Wifi includes a Google Assistant-powered speaker built into each mesh point. That ties in perfectly with the voice-controlled functionality and shows Google Nest's continued effort to make its devices helpful, not just smart. From $169 at Best Buy Pros Beautiful design Google Assistant built-in to the mesh points Great tie-ins with Google Assistant and Google Home Routines WPA3 support AC2200 4x4 5GHz is wicked fast Cons No wired backhaul Mesh point is slower than the router Limited QoS options One LAN port Proprietary power cables on Router and mesh points Ubiquiti Networks has been in the game since 2005, and its … [Read more...] about Nest Wifi vs. Ubiquiti AmpliFi HD: Which should you buy?
In high-school health class films, sperm cells are shown zooming around with quick flicks of their tails, but they only jump into action when they are in the right chemical conditions – usually that's in the female reproductive tract. Researchers have now figured out the precise chemical switch that turns on the sperm's motors, which could lead to the development of new treatments for infertility.Scientists have long known that sperm's activity level depends on the internal pH of the sperm cell —a measure of how acidic or alkaline a substance is. They start out with acidic insides when in the male reproductive tract, but once they enter the female tract, their internal environment becomes alkaline and off they zoom toward the egg.That pH change occurs because the sperm release protons (acids are compounds that will donate a hydrogen ion — also known as a proton — to another compounds, called a base)."The concentration of protons inside the [sperm] cell is 1,000 … [Read more...] about What Really Motivates Sperm
A vasectomy is birth control for men. Each year, half a million men, from cocksure 21-year-olds to seasoned elderly gentlemen, are rendered sterile by a vasectomy in the United States, according to the National Institutes of Health.Vasectomies cost between $500 and $1,000 and there are a few techniques used to perform them. In each method, the doctor severs the vas deferens the two tiny tubes, each about the diameter of a round shoelace, that route sperm from each testicle to the urethra in the penis during ejaculation .How it's doneIn the conventional procedure, the doctor locates the vas deferens by making two small incisions in the scrotum, the skin pouch that houses the testes. The vas deferens is cut, and then the doctor ties the cut ends and sews up the scrotal incisions.In the no-scalpel procedure, the doctor feels for the vas deferens beneath the scrotal tissue, clamps it and makes a tiny puncture. This opening is then stretched wider to locate, cut and knot the two ends of the … [Read more...] about What’s a Vasectomy?