Posts Tagged ‘what is’
Question Asked: What Is The Most Common Allergy In Adults?
In most adults, the most common allergy is to shellfish.
However, a good portion of adults are also allergic to peanuts and fish, as well.
There are no numbers readily available as to how many people are allergic to shellfish, since it’s not a big enough statistic to be reported on. However, estimates put the number in the millions, worldwide.
Question Asked: What Is The Moon Made Of?
The short answer is: rock. The longer answer is a bit more complicated, and with less of a satisfying result.
The composition of the Moon is a actually unknown. Although we know a lot about what the surface of the Moon is made of, we can only guess at what the internal composition of the Moon is, because we’ve yet to go up there with massive drills and find out.
Like the Earth, the Moon has layers. The innermost layer is the lunar core. It only accounts for about 20% of the diameter of the Moon. We think that the lunar core is made of metallic iron, with small amounts of sulfur and nickel. Astronomers know that the core of the Moon is probably at least partly molten, possibly from an underground volcano that erupted hundreds of thousands of years ago.
Outside the core is the largest region of the Moon, called the mantle. We believe that the mantle of the Moon is largely composed of the minerals olivine, orthopyroxene and clinopyroxene. It’s also believed to be more iron-rich than the Earth’s mantle.
The outermost layer of the Moon is called the crust. This is the layer of the Moon that scientists have gathered the most information about. The crust of the Moon is composed mostly of oxygen, silicon, magnesium, iron, calcium, and aluminum. There are also trace elements like titanium, uranium, thorium, potassium and hydrogen.
So there you have it. While we know relatively what’s on the surface of the moon (from bringing pieces back and testing them), we don’t really know what’s underneath that, and probably never will.
Question Asked: What Is HTML?
HTML is an acronym for Hyper Text Markup Language. HTML is a type of computer language, that allows websites to be created.
A web developer will write “code” in HTML, that gets sent via the internet, to your browser. Your browser, being the smart piece of technology that it is, knows how to decipher that code and turn it into a webpage.
Here’s how the “industry” defines HTML:
- HyperText is the method by which you move around on the web — by clicking on special text called hyperlinks which bring you to the next page. The fact that it is hyper just means it is not linear — i.e. you can go to any place on the Internet whenever you want by clicking on links — there is no set order to do things in.
- Markup is what HTML tags do to the text inside them. They mark it as a certain type of text (italicised text, for example).
- HTML is a Language, as it has code-words and syntax like any other language.
Cite: YourHTMLSource
There you have it. That’s what HTML is. Now, if you’d asked “How do I learn HTML”, this would have been a much much longer post.
Question Asked: What Is The Average Response Time For A 911 Call?
According to an article in USAToday, the average response time is a highly debated (and often skewed) number. Many cities in the US report the amount of time it takes between answering the phone, and showing up at the scene the “response time.” While, in many cases, showing up on the scene isn’t where the actual response starts.
In many instances, it can take up to another twenty minutes for the person in need of attention to be seen. A specific example given happened at LAX, back in 2005. Fire trucks and EMTs showed up “at the scene” in about 7 minutes, plenty of time to save the life of the man who had a heart attack. They didn’t make their way through the airport, and actually see him until 23 minutes later. The man died. The “response time” on that call, however, was 7 minutes. The amount of time between when the 911 operator answered the phone, and the paramedics showed up at the scene.
However, based on knowing that fact, the average response time (we’ll say that this is just showing up at the scene of the incident) is roughly 5 minutes 30 seconds, based on the national average.
Of course, this number goes down in larger cities where there are multiple fire stations, and police stations and whatnot. In smaller, rural towns, where there’s sometimes only a volunteer fire department, the response time can be much greater.
Question Asked: What Is An SSL Certificate?
An SSL certificate, as a web-store owner, is a vital part of setting up your store on the internet.
The SSL certificate is issued by a “trusted authority”, and works with your site’s visitor’s browser. The SSL certificate tells the visitor’s browser that the website they’re visiting is actually the website they think they are, and not an imposter.
The SSL certificate also provides an encryption (usually 128 bit, 256 bit, or 512 bit, but in some cases 1024 bit), so that data sent from the visitor’s browser, to the server stays safe and secure.
Here’s a technical explination from Thawte, one of the leading SSL providers:
SSL (Secure Sockets Layer), also known as TLS (Transport Layer Security), is a protocol that allows two programs to communicate with each other in a secure way. Like TCP/IP, SSL allows programs to create “sockets,” endpoints for communication, and make connections between those sockets. But SSL, which is built on top of TCP, adds the additional capability of encryption. The HTTPS protocol spoken by web browsers when communicating with secure sites is simply the usual World Wide Web HTTP protocol, “spoken” over SSL instead of directly over TCP.