Why do exams always tell you to use a number 2 pencil? What happens if you don’t? Quick Questions explains!
Hosted by: Michael Aranda
Messages from our Subbable subscribers:
“Man, I was really holding out for that lab coat!” - Erik Avalos
“Flabbergasted lemmings elegantly circumnavigate unanticipated pandemoniums utilizing transparent aluminium hovercraft.” - Eric Svensson
“I thank God for your work, SciShow team!” - Jay J. Atherton
“Piret you are awesome and truly good friend” - Stiina Sild
“Practice. Don't wait until you are good at something to do it.” - Mike Chaput
“Thank you, Kim for my beautiful babies! Go Science!” - Jonathon Dunn
“Proud to support SciShow. You should too!” - Sharon Vaughn
“Rainy days a perfect!” - Viktorija Zuran
“Love you Scott. In our hearts forever ❤ UMW Theatre” - Sam Wilhelm
“Don't Forget to Be Awesome.” - Elise Logan
Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Lentz, John Szymakowski, Ruben Galvao, and Peso255.
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow
Or help support us by becoming our patron on Patreon:
Looking for SciShow elsewhere on the internet?
The real reason is that Scangrade The Magnificent, a test grading/world domination device, uses lead from the number 2 pencil as it's energy source and after 50 years of testing his power will finally be great enough to take over the world.
Yes, I took selected art classes in high school and majored in Fine Arts and Visual Communications in college; so, I'm quite familiar with the different "H", "B" and "HB" grades of drawing pencils. Charcoal and pastel crayons have similar gradings for the relative darkness when applied to a given surface or how course or fine its grain is in reference to the former or how saturated or diffused the color is for the latter.
hahah nope my school's machines failed every student in school and we all used 2b pencils but the machines were really trashy at detecting the marks and the highest score anyone got was 54.
teachers had to remark every single student's answers for all the subjects but those low scores were still kept in our reports.
I hack the scantrone checker its not really electrical its surface censor try to shade all circle with the tip of the ballpen cover then pick a answer using a pencil the machine will register your answer is correct
What if I want to use a 9B pencil and a kneaded eraser? Why can't I do that? It's darker than a No. 2 pencil, and since I'm the only one at my school with enough sense to wear a pair of Artist gloves when I draw or write, no one can do the sameas me(smudgy lines. Very smudgy lines)
Pssshhh.. Once when I was in 7th grade we had to take a stupid muscle test in gym, I didn't have a number 2 pencil so I used my mechanical pencil, it still worked. So suck it teachers who freak out if you're using a mechanical pencil!
I once tried to use an HB lead mechanical pencil on a state test. The teacher was insanely mad because it was mechanical, not wooden. I still use mechanicals pretty much everywhere, with B being the one I use for art, or #1.
The miners are interested in finding a nonce which will create a hash with certain characteristics. Lastly, they have to find a random value that they included in the header, which makes the computed hash over that header a value below a particular target. In other words, they do not have to agree to change the protocol. Though there are a few gold diggers attempting to fill their pockets and certain projects that aren`t viable and shouldn`t be encouraged in any way. For users running a complete node, it is a fairly painless procedure to upgrade the software to the newest version. The process of locating a new block to extend the blockchain is known as mining. Proof-of-Work systems utilize cryptographic hashing algorithms to create the action of mining a block a complicated computation. Our software is totally incompatible with altcoins. Changes and modifications to how that it works need to be approved by consensus and every CPU gets a vote. To start with, it`s essential to realize that hardware wallet users control entirely their private keys. Whether you`re bullish or bearish on Bitcoin Gold, you ought not lose your coins as a result of careless mistakes! On the 1 hand, it may result in making a coin that solves all the pending issues. There`s no currency or digital asset named Bitcoin Core. Bitcoin Cash increases the range of transactions that may be processed per block. You could send any quantity of money, any place in the Earth, almost at no cost. You`ve made some great money already on the market, but you want more. For a wealthy individual, BTC`s price premium may be viewed as a plus. For someone without lots of money, BCH`s low price may look like a great deal for Bitcoin. If you have some concerns about the worth of Bitcoin after all forks, you need to be ready for a drop. The distinction is that not all of these suffer the chain split. The primary problem is Bitcoin imposes a hard limit on the magnitude of a block, the location where transaction information becomes stored. The end result is many straightforward wallets, called SPV wallets and very commonly found on your phone, will be quite confused about which chain is Bitcoin. In Bitcoin, the most important reason is known as the network effect.