In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to use Markovnikov's rule to figure out which addition reaction is most likely in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.
Acne develops when pores become blocked with dead skin cells and oil. They usually disappear over time but sometimes they leave a scar. When those blemishes form white blood cells rush to the surface to help heal the area. But occasionally a scar forms. Popping and picking can send bacteria further into the skin and increase the blemish and it greatly increases the likelihood that a scar will appear. Nodules and cysts are more severe blemishes and have an increased likelihood of leaving scars...
In order to chop an onion without crying, you will need the following: a spoon, a cutting board, and an extremely sharp knife.
If you pull the spark plugs out of your engine and they are covered in oil, that might seem terrible, but the problem really isn't that bad in all likelihood. Your probably have a spark plug tube leak, and this video will show you how to find and fix just such a problem.
In all likelihood, there is no living person who knows more about hitting a baseball than former NL MVP Jeff Bagwell. This video features the man himself discussing the mental aspects of hitting, including getting over a slump and learning how to choose your stance properly. Watch this video, there is no one more qualified to teach you about hitting than this.
The video shows the user how to make their hands resemble those of a vampire. This is done by applying a thin layer of white makeup to the backs of the hand with a cylindrical sponge. The reason for only applying the makeup to the backs of the hands is to avoid coating surfaces you touch with the white makeup. It's suggested that you leave a gap between the makeup and the sleeves of your jacket as it does not spoil the effect and helps eliminate the likelihood that you'll get makeup over your...
Cue ball draw refers to the way a cue ball strikes a rack of balls. In particular, if the cue ball is hit low on the ball, when it strikes a rack of balls, for the break, it will have enough backspin to wind its way back to the shooter.
On the airplane, in the middle of cold and flu season, your seatmate is spewing, despite the clutch of tissues in their lap. Your proximity to an infectious person probably leaves you daydreaming (or is it a nightmare?) of pandemics and estimating how likely it is that this seatmate's viral or bacterial effusions will circulate throughout the plane and infect everyone on board.
Cancer doesn't discriminate, and anyone can get this disease. However, some factors can increase your likelihood of developing cancer.
Forget the rise of the machines. Tardigrades are set to outlive everything — even the bots. When the last echo of a whisper in a cell phone has long dissipated into space, the water bears will still be hanging out.
Facebook is testing a new feature in India. One that could help you protect your profile photos from being used on sites without your permission.
Tell the truth. The bat picture creeps you out. You are not alone. But in reality, bats truly are some of our best friends. They gobble thousands of disease-spreading bugs a night. But they also carry viruses that can be deadly to humans. So, bats — friend or foe?
Apple's annual iPhone launch is set for Sept. 10 and iOS 13 is expected to be released soon thereafter, but it appears that the likelihood of a "one more thing" reveal just got a big boost.
It's looking more and more likely that rumors stating that the iPhone 7 will not include a 3.5 mm headphone jack are true. Chinese websites Wei Feng and Anzhuo.cn reported that anonymous sources on the supply chain confirmed that the controversial design choice is a reality.
Interesting reaction coke and milk The reaction of phosphoric acid (V) to proteins in the milk - they are cut and causes a precipitate
Google Chromecast is only 35 dollars. That's about 2 and a half drinks at a decent bar in Los Angeles. So, my roommates and I looked to make the investment. The small box arrived in the mail and the setup couldn't be easier. Simply, plug the Chromecast into the HDMI port on your TV and pair the two devices. Done and Done. Having the ability to stream anything on our computers or cellphones right to the TV was the main reason for getting Chromecast. Now, for streaming through the Chrome browse...
UPS gives you all the tools you need to take away the complications and confusion of international shipping. UPS provides simple, step-by-step online instructions and helps guide you through the required documentation to reduce the likelihood of customs delays.
Like with any shooting game, the gun can make all the difference in Zombies mode in Call of Duty: Black Ops 2. When fighting off a ton of zombies, walking around with a pistol or a shotgun that only holds two rounds can cause some serious issues. Since there are only a few weapons readily available in each level, the mystery weapons box is essential in making it to those higher levels.
Security researcher Nadim Kobeissi has discovered that the Windows 8 SmartScreen feature, meant to screen downloads for malicious software, actually reports the data about which applications users are installing to Microsoft. He also says that "the Microsoft server is configured to support SSLv2 which is known to be insecure and susceptible to interception." The two main concerns are the ability of law enforcement to subpoena Microsoft for the information and of hackers to intercept user data...
I have owned quite the plethora of electronics in my life. A commonality between most of these devices' screens is frozen or dead pixels. This is probably the most annoying thing about buying new hardware—your LCD, or worse, LED display has one or more pixels that continues to stay lit. Most of the time, this will appear in the form of a brightly colored pixel that never changes, or a pixel that never displays the right color. Once you notice it's there, you just can't stop staring at it. It ...
In our first part on software-defined radio and signals intelligence, we learned how to set up a radio listening station to find and decode hidden radio signals — just like the hackers who triggered the emergency siren system in Dallas, Texas, probably did. Now that we can hear in the radio spectrum, it's time to explore the possibilities of broadcasting in a radio-connected world.
Update: Monday, 11 p.m. ET: In a report from Bloomberg, eMagin CEO Jeffrey Lucas has contradicted what appeared to be investor information found in SEC filings that surfaced on Monday. Although Apple is listed among several other investors in the company in filing, Lucas told Bloomberg that Apple is not, in fact, an investor in the company. Offering further clarification, Lucas told the news site that eMagin "listed those companies in the filing because it had discussions with them at industr...
Samsung's Galaxy S8 and S8+ are excellent smartphones that wowed critics and consumers alike. So, it's only natural that Samsung's followup, the Galaxy S9 and S9+, would garner significant anticipation. While we don't know everything about these devices quite yet, we do have guesses to some key points of interest, including when the device will be announced and even released.
Rabbit ears and dog noses are fun and all, but Kay Jewelers is here to class up Snapchat.
Google's YouTube Red is an awesome service, particularly in the United States where it comes bundled with a subscription to Google Play Music. You don't have to worry about ever seeing ads again on any videos, you can continue playback after you exit the YouTube app or even when you turn your screen off, you can download videos for offline playback, and you'll have access to YouTube Music.
Normally, "restricted access" is something you despise. No one likes to be told they can't do something, especially when it comes to the Internet. Unfortunately, having web access at all times can not only eat away at your wallet, but make your day less productive overall, so some sort of moderation is needed.
A lot of computers come with a ton of pre-installed software from the manufacturer, some of which you need and some of which you could most certainly live without. And over time, you may have downloaded and installed a bunch of programs and apps that you probably can't even remember. Now, you could go ahead and uninstall everything that you don't think you need, but then you run the risk of removing something that could really mess up the system. When I open up my Programs folder, I feel like...
Do you guys remember those things you hold with your fingers to write stuff down? I think they're called pens, or something like that...
It's really no wonder why Christmas is the most popular and widely celebrated holiday of the year. Your whole family gets a chance to spend some much needed quality time together—and not just gorging on food like at Thanksgiving. But in all seriousness, that's not the reason at all... we're talking Christmas presents here.
A good smartphone can be the perfect workout companion. You have music for motivation, videos for pushing through boring cardio sessions, GPS to keep you on course, and even an array of sensors for gathering data about your workout. But not all phones are created equal when it comes to helping you stay fit.
If you updated your iPhone to iOS 12.2, you'll notice in the Apple News app that there are no longer "Love" and "Dislike" buttons inside stories. Why did Apple remove them? And will they make a comeback?
For the first time, the US Food and Drug Administration (FDA) has approved medication to treat children with a serious infection called Chagas disease, which stealthily infects and damages the hearts of millions of victims a year.
After watching Samsung's exploding phone fiasco this past year, I took comfort knowing that the likelihood my iPhone would suddenly combust was slim. However, after hearing about a recent incident in Wisconsin, iPhone owners may have reason to worry.
US blood banks have assured the American public that they have the tools to prevent a Zika contamination, despite the rapid spread of the disease.
Cable TV providers were dealt a pretty significant blow on Thursday, February 18th, 2016, when the Federal Communications Commission decided that customers should have a choice in what type of device they use to watch cable, instead of being forced to rent a set-top box.
So you want to create a meterpreter virus, but you keep getting caught by AV. How do you create one that will go undetected? In this tutorial, I'll teach you how to code your own simple virus that will download a powershell payload from an apache webserver and execute it - bypassing antivirus.
Welcome back, my novice hackers! As most of you know by now, a notorious commercial, legal hacking group named "Hacking Team" was recently hacked. As part of the hack, thousands of emails and other material on their servers was divulged. Among the material released were three zero-day exploits. In this tutorial, we will walk through the steps to load one of them, which has become known as the CVE-2015-5119 exploit.
It's a shame that one of the world's tastiest foods can be such a pain to prep. Most cooks are familiar with this conundrum: chopping or crushing garlic releases a pungent liquid that causes bits of garlic to stick your knife and hands, creating a messy affair. So what is going on here? The common assumption is that the garlic is releasing some kind of oil, but the truth is that this liquid rinses away easily in water. Yet one of the basic precepts of chemistry is that oil and water don't mix.
Want the convenience of a throwaway email address without all the hassle? How about anonymous text messaging so you can get to know someone before giving them your real information? Gliph has you covered. Gliph is a service that lets you create an identity around a set of three to five symbols called "artifacts" instead of your name, phone number, or email address. You choose how much information you reveal, and anytime you communicate with someone else who has Gliph, the data is protected us...
In these times of social distancing, video calling is becoming the technological substitute for face-to-face connections. For those who carry an iPhone, the art of video calling defaults to FaceTime, the native app on iOS that is exclusive to Apple devices. But what do you do if you or the other party is on Android?
