See how Newton's laws of motion apply to an aircraft's cruise performance with this educational video from NASA -- the National Aeronautics and Space Administration, the leading resource for space exploration. There's no better place to learn about aerospace and Newton's three laws of motion and how they apply to aeronautics than NASA.
JustMathTutoring This video shows the procedure of finding derivatives using the Chain Rule. The Chain Rule states that the derivative of a composition of functions is the derivative of the outside function evaluated at the inside multiplied by the derivative of the inside. This can be stated as if h(x) = f[g(x)] then h'(x)=f'[g(x)]g'(x). This is explained by two examples. In the first example we find the derivative of the sine of square of 'x'. We take the derivative of sine at square of 'x'...
Don't put up with another winter of discontent. There are simple things you can do to lift yourself out of the doldrums.
Video: . IF function
The search is on to find antibiotics that will work against superbugs — bacteria that are rapidly becoming resistant to many drugs in our antibiotic arsenal.
Even as health authorities describe the symptoms of Zika infection in the general population as mild, a new surveillance study finds serious side effects are more common, and serious, than previously thought.
Hello everyone. It's been a while since I've posted anything (with good reason). But, now that the digital dust has settled, it's time to be an adult about this. I will be continuing to post to Null Byte on a smaller scale, and will also fully participate in whatever communities Null Byte members branch into.
It feels like someone reached into your chest and squeezed. Your head throbs in unison with your heartbeat. Clammy dread coats your body in sweat. Whether you call 911 or someone does it for you, the ER is your next stop.
Get ready for more software testing. Just two days after the official release of iOS 12.1, Apple seeded public software testers iOS 12.1.1 — one day after developers received the update. While the rest of the iOS world is just getting to know all of the cool, new 12.1 features, testers are now sinking their teeth into what the next iteration of iOS has to offer.
If you live with pets, you know where their tongue has been, yet you let them kiss and lick you all they want without even thinking twice about it. I've heard people say that a dog's mouth is very clean, and that their saliva, delivered by licking, can help heal wounds, but is that really true?
Apple wastes no time with betas. Right on the heels of the official release of iOS 12.1, Apple released the first beta for iOS 12.1.1 to developers on Wednesday, Oct. 31. The update comes just one day after iOS 12.1, which itself was in beta development for 43 days this year. The denotation for 12.1.1 indicates it's a minor update over 12.1, and there are only a few things in its release notes.
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Your company is deciding on starting new projects but there is a lot you need to do to make sure these projects are right for your company and will be financially rewarding to the bottom line. Before you begin you and your project management team will need to go through a Project Evaluation Process.
You can feel it in your bones. You may die if you don't get this phone. There's just one problem — the price. Suddenly, you come across what seems like manna from heaven. That very device, at a deeply discounted rate, can be yours.
Computer vision is a key component in enabling augmented reality experiences, but now it can help give sight to the blind as well. In this case, that assistance comes from Envision, developers of mobile apps for iOS and Android that use optical character recognition (OCR) and object detection to provide an audio description of the user's surroundings.
One inventor wants to bring augmented reality to internet radio and home audio speakers. Meanwhile, a leading consumer electronics company has opened up access its deep learning tools for building augmented reality apps. In addition, analysts examine how augmented reality will impact the design and construction and profile the top developers in augmented and virtual reality.
As many as 700 species of bacteria live on our teeth and in our mouth, and just like the microbiomes inhabiting other parts of our bodies, they change in response to diseases and other health conditions.
Antibiotic-resistant infections that usually occur only in hospital settings are spreading in communities, increasing hospital stays—and danger—for young children.
Most of us have some sort of malware scanner or antivirus program on our computers, but what about our smartphones? A lot of people don't realize that computers aren't the only devices that are susceptible to malicious software and apps—they can follow you on your smartphone or tablet, too.
The last update to iOS 12 featured more emoji, Group FaceTime, eSIM functionality, real-time depth control for new iPhones, and a few other interesting tidbits and fixes. Now, in the latest for iPhones, iOS 12.1.1, Apple brought back a few things that were removed or made more difficult to access in previous updates, and it even has a few new features to offer, albeit small ones.
How can a drug used to treat cancer be effective against viruses, too? The answer lies in the drug's shared target — specifically, cellular components that control the activity of genes. A new research study showed that one such type of drug, histone methyltransferase inhibitors used in cancer clinical trials, has activity against herpes simplex virus, too.
Crusty, itchy, red eyes? There is a decent chance you could have conjunctivitis, or pink eye, an infection of the thin lining around the eye and the eyelid, caused by bacteria, an allergen, virus, or even your contact lenses. Whatever the cause — you call up your doctor to get a prescription to clear it up, right? Not really.
For about a million Americans each year, a joint replacement brings relief from pain and restored mobility. But, 5–10% of those people have to endure another surgery within seven years, and most of those are due to an infection in their new joint. If doctors could treat infections more effectively, patients could avoid a second surgery, more pain, and another rehabilitation.
Wherever there are people, the party is sure to follow. Well, a party of microbes, at least. That is what scientists at NASA's Jet Propulsion Laboratory have found after a 30-day microbial observation of the inflatable lunar/Mars analog habitat (IMAH).
Staphylococcus aureus is a widespread bacteria — about a third of us have it on our body right now — usually in our nose or on our skin. And it probably isn't causing an infection. But, about 1% of people who have Staphylococcus aureus present have a type that is resistant to the antibiotic methicillin.
Twelve-year old Rory Staunton took a dive for a basketball during gym class and came up with a cut on his arm. The school nurse applied a couple of band-aids, without cleaning the cut, and off he went. In approximately three days, hospital physicians told his parents there was nothing else that they could do for their son; he was dead.
The herpes simplex virus (HSV) can cause devastating complications for infected newborns whose mothers have genital herpes. Understanding risk and research can help you, and your baby, when the time comes.
Deadly rat lungworm parasites have found their way into Florida. The parasitic worm relies on snails and rats to complete its life cycle, but don't let this nematode's name fool you. This worm can cause meningitis and death in humans who inadvertently consume snails, frogs, or crustaceans harboring the infective parasite.
Despite the threat of superbugs, physicians continue to prescribe antibiotics when they might not be needed, and patients are suffering.
Move over whole wheat — white bread may be back in style after a new study shows that it may be your gut microbes that decide what kind of bread is best for you.
Have you ever had a burning sensation when you urinate? Low fever, back pain, and maybe cloudy urine? Male or female, it could have been a urinary tract infection. If it lasted long enough, the chances are good you went to the doctor for help. For about 20% of women, standard testing for a UTI does not reveal the presence of infection-causing bacteria, even though bacteria may be causing their symptoms. Well, a new test may provide better answers.
Colorado State University scientists have developed new tech that quickly identifies the presence of Zika virus in mosquito populations — and in human body fluid.
Antibiotics used to prevent diseases in livestock are creating a world of hurt for humans and the soil we depend on for food. Bacterial resistance to antibiotics is a global health issue. The overuse, underuse, and poor use of these life-saving drugs is rapidly removing them as a treatment option for serious infections in humans—plus bacteria are naturally adaptive.
In the ongoing search to find better ways to use antibiotics, an extract made from maple syrup has some surprisingly important medical benefits.
Responding to the emergence of Zika in the US, researchers investigated what type of repellent works best to reduce your odds of a mosquito bite from Aedes aegypti, the mosquito species that spreads the Zika virus.
The pathogen referred to as a "nightmare bacteria" is quietly adapting and spreading faster than anticipated.
Transmitted by ticks, Lyme disease is a serious infection that is probably headed your way. A recent study confirms the pathogen that causes Lyme disease is now established in nine national parks in the East, including Acadia and Shenandoah National Parks.
Job interview success can be a difficult thing to measure. Is confidence a job-winning trait? Or were the interviewer's questions not answered as fully as they had hoped? Maybe you weren't sure how your big, happy smile went over with such a formal setting.
Welcome back, my novice hackers! It has become clear from some of your questions that quite a few of you are unfamiliar with the hexadecimal system, or simply, hex. The hexadecimal system is used throughout computing and if you have never studied this Base16 numering system, it may appear relatively opaque.
More prescriptions for antibiotics are written for ear infections than any other type of infection. A new study comparing the incidence and causes of ear infections in children between the ages of six months and three years found that the incidence of ear infections over the last decade has dropped significantly since the 1980s.
