science

IJustine

IJustine is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand IJustine rather than just read about it. In short: Justine Ezarik ( ee-ZAIR-ik; born March 20, 1984) is an American YouTuber. She is best known as iJustine, with over one billion views on her YouTube channel.

Key takeaways

IJustine belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect IJustine to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of IJustine from memory before moving on to harder problems.

Reference excerpt

Justine Ezarik ( ee-ZAIR-ik; born March 20, 1984) is an American YouTuber. She is best known as iJustine, with over one billion views on her YouTube channel. She gained attention as a lifecaster who communicated directly with her millions of viewers on her Justin.tv channel, ijustine.tv. She acquired notability in roles variously described as a "lifecasting star," a "new media star," or one of the Internet's most popular lifecasters. She posts videos on her main channel iJustine. Ezarik was known for her "300-page iPhone bill" which followed the first month of service after the introduction of the first iPhone in 2007. The viral video of her review earned her international attention. Ezarik was ranked among the top 1000 Twitter users in the world with over 1.8 million followers. Ezarik had starred on the YouTube comedy series Annoying Orange, as Orange's love interest Passion Fruit. In 2016, she was an advisor to Arnold Schwarzenegger on the reality competition series The New Celebrity Apprentice. Her television acting credits include guest appearances on Law & Order: Special Victims Unit, Criminal Minds, The Bold and the Beautiful and The Vampire Diaries. Ezarik also appeared as a main character on the first and fourth seasons of the YouTube Premium murder-mystery reality series Escape the Night.

Early life Justine Ezarik was born in Pittsburgh, Pennsylvania, the oldest daughter of Michelle Ezarik, a physical education teacher, and Steve Ezarik, a coal miner of Slovak descent. She attended Bentworth High School, in Washington County, Pennsylvania, graduating in 2002. Ezarik has two younger sisters, Breanne and Jenna.

Career

Early career After graduating from the Pittsburgh Technical Institute in 2004, Ezarik landed several jobs in graphic design and video editing before starting her own business. In December 2006, she was named one of five finalists in the "Yahoo! Talent Show", a Yahoo!-sponsored competition for best online videos. She played a photojournalist covering a bank robbery in downtown Pittsburgh on the television series The Kill Point from Spike TV, which starred John Leguizamo and Donnie Wahlberg; it was filmed in May 2007. In 2007, she was an occasional co-host and panel member on MacBreak and MacBreak Weekly with Leo Laporte.

Ezarik appeared live on the Internet through the use of a wireless webcam and microphone on her own iJustine lifecasting channel on Justin Kan's Justin.tv, where she began transmitting her life via the Internet on May 29, 2007. She was never paid for any of this volunteer work on Kan's channel as a beta-tester. Her reality-video blog (vlog) was the first one launched on Justin.tv. Kan had been encouraged by fans and followers to allow someone else to make a guest appearance on his lifecasting channel. At first Ezarik was considering producing a video series for the technology audience because they had been the most captive audience for online video series. She stated that she did not intend to broadcast what she considers private moments, noting "That shouldn't be a problem. I am going to try as much as I can to do 24/7." When the iPhone debuted in June 2007, Ezarik covered the device's debut at the Mall of America in Bloomington, Minnesota a suburb south of Minneapolis. She had been invited by a technology evangelist to film her Internet TV show at the mall instead of covering its debut at the Shadyside Apple store as she had originally planned. She covered the July 22, 2007, "The Kill Point" series premiere party live on her lifecast video stream. Ezarik was cited as being one of the website's most popular lifecasters in the October 2007 issues of both The New York Times and The Wall Street Journal.

300-page iPhone bill

In August 2007, she created the "300-page iPhone bill" video and uploaded it to the video sharing site YouTube, where the video quickly became an Internet meme. She also uploaded it to some other video sharing sites. Stories of unexpected billing issues began to circulate in blogs and the technical press after the Apple iPhone's heavily advertised and anticipated release, but this video clip brought the voluminous bills to the attention of the mass media. Ten days after its initial posting, the video had been viewed more than 2 million times on the Internet, and received international news coverage. The video was later reported to have reached over 8 million total views as of December 2007. The video earned Ezarik a $5,000 payout from the video hosting service Revver.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with IJustine

Start with the simplest possible case. Write down what IJustine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IJustine before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IJustine ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IJustine

In research: IJustine appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses IJustine in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: IJustine is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1984 births, 21st-century American actresses, Actresses from Pittsburgh, so understanding it makes those chapters shorter.
In everyday life: Look for IJustine outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study IJustine in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what IJustine means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain IJustine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IJustine in simple terms?

Justine Ezarik ( ee-ZAIR-ik; born March 20, 1984) is an American YouTuber. She is best known as iJustine, with over one billion views on her YouTube channel.

Why does IJustine matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IJustine?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IJustine.