background preloader

An Intuitive Guide To Exponential Functions & e

An Intuitive Guide To Exponential Functions & e
e has always bothered me — not the letter, but the mathematical constant. What does it really mean? The mathematical constant e is the base of the natural logarithm. And when you look up natural logarithm you get: The natural logarithm, formerly known as the hyperbolic logarithm, is the logarithm to the base e, where e is an irrational constant approximately equal to 2.718281828459. Nice circular reference there. I’m not picking on Wikipedia — many math explanations are dry and formal in their quest for rigor. No more! e is NOT Just a Number Describing e as “a constant approximately 2.71828…” is like calling pi “an irrational number, approximately equal to 3.1415…”. Pi is the ratio between circumference and diameter shared by all circles. e shows up whenever systems grow exponentially and continuously: population, radioactive decay, interest calculations, and more. Understanding Exponential Growth Let start by looking at a basic system that doubles after an amount of time. A Closer Look Mr. Related:  How Stuff Worksza_zavla

How speakers make sound - Animagraffs Speakers (also called loudspeakers) push and pull surrounding air molecules in waves that the human ear interprets as sound. You could even say that hearing is movement detection. So what makes a speaker travel back and forth at just the right rate and distance, and how does that make sound? Our 3D animated infographics attract thousands of viewers.

Math Expression: Free Math Tutor Online Тренировки и соревнования Хочешь играть в бадминтон? Добро пожаловать в ХБСК! Получай радость от любимой игры и заводи настоящих друзей! А квалифицированные тренеры станут твоими наставниками на пути к высоким спортивным достижениям! Детские тренировки в нашем Клубе проводятся в пяти спортивных залах, расположенных в Центре Харькова, Павловом поле и на Алексеевке. Занятия проходят в удобное вечернее время. Выбирай удобное расписание прямо сейчас, и до встречи на тренировке! Университет городского хозяйства м. Тренер: Крючкова Анна Родионовна, Мастер спорта Украины Тел: (063) 131 56 32 Лицей искусств №133 м. Тренеры: Крючкова Анна Родионовна, Мастер спорта Украины Огурцова Маргарита Вячеславовна, Мастер спорта Украины Школа №109 м. Тренеры: Жаркая Елизавета Юрьевна, Мастер спорта международного класса Гасанов Анар Надирович, Мастер спорта Украины Тел: (063) 499 24 93 Гимназия №169 м. Тренеры: Конов Виталий Сергеевич, Мастер спорта международного класса Самарчанц Дарья Рубеновна, Мастер спорта Украины Тел: (063) 589 67 66 м. 1.

untitled What's a Hall Thruster? What's a Hall Thruster? The Hall thruster is a type of plasma-based propulsion systems for space vehicles. The amount of fuel that must be carried by a satellite depends on the speed with which the thruster can eject it. Chemical rockets have very limited fuel exhaust speed. The Hall thruster was invented in the late 1950's. A conventional electrostatic ion thruster consists of two grids, an anode and a cathode, between which a voltage drop occurs. In a Hall thruster, electrons injected into a radial magnetic field neutralize the space charge. Existing Hall thrusters can produce large jet velocities 10-30 km/s within the input power in the range from hundred watts to tens of kilowatts. The Hall Thruster Concept

Math and English: free printable math materials in English for mative students and ESL math students. Персональный сайт - История Здравствуте! Я решился написать эту статью с целью собрать в одном месте ранее написанные мои статьи об особенностях использования свинцовых аккумуляторов, и развенчанию особенно вредных мифов об их использовании и восстановлении.Статья написана на основании собственных исследований как литературы так и отдельных тестовых ячеек в хим.лаборатории.Я повторял и повторяю еще раз: свинцовый аккумулятор мало чем изменился за последние 100лет, он постоянно подвергается варварскому отношению со стороны "потребителей", которое с успехом выдерживает потому что обладает практически идеальной хим. схемой. Но об этом ниже... Итак, как это ни банально но начнем с азов.Примерно в 1859-1860 годах в лаборатории Александра Беккереля, работал в качестве ассистента Гастон Планте. Молодой человек решил заняться улучшением вторичных элементов, чтобы сделать их надежными источниками тока для телеграфии. Кто не верит - читаем книгу: М. Описание физ. Рекомендуемый График заряда батареи после глубокого разряда.

4 ACT Science Tricks That Will Boost Your Score No one said it was going to be easy. The ACT Science Reasoning section is a test filled with all sorts of questions ranging from challenging to really challenging, and it makes sense to get a few ACT Science tricks up your sleeve whether you're taking the test the first time around or taking a stab at a second (or third!) attempt. Here are a few of those ACT Science tips to make sure you're getting the score you really crave. 17 More Strategies to Improve Your ACT Score ACT Science Trick #1: Read the Data Representation Passages First Getty Images | Erik Dreyer The Rationale:On the ACT Science Reasoning test, you'll see three different types of passages: Data Representation, Conflicting Viewpoints, and Research Summaries. A Helpful Reminder: You'll know it's a Data Representation passage if you see several large graphics like charts, tables, diagrams and graphs. ACT Science Trick #2: Use Shorthand Notes In the Conflicting Viewpoints Passage Getty Images | Don Bonsey Flickr User Walking_Geek

The Way Things Work The New Way Things Work[edit] A newer version, The New Way Things Work, released on October 26, 1998, contains additional text on the workings of computers and digital technology. It also lacks two pages from the first edition; one page demonstrated the working of a mechanical coin-operated parking meter. Table of Contents for The New Way Things Work[edit] Part One—The Mechanics of Movement Part Two—Harnessing the Elements Part Three—Working with Waves Part Four—Electricity and Automation Part Five—The Digital Domain Making Binary digitsStoring BitsProcessing BitsSending BitsUsing Bits/Digital SystemsEpilog Eureka! Technical Terms Index Publishing history[edit] References[edit] Interactive Whiteboard Resources: Maths, Key Stage 2 - Topmarks Education Caterpillar OrderingTablet friendly A flexible game for ordering numbers and for number sequences. Fantastic on an interactive whiteboard and tablet friendly. OrderingFlash You'll love this ordering game! Compare Numbers on a Number LineFlash Compare numbers on two different number lines and decide which is bigger. Comparing NumbersFlash A teaching tool which is good for demonstrating greater than and less than with 2 and 3 digit numbers and rounding to 10 and 100. CountersquareFlash A hundred square with movable counters and lots of different ideas on how you can use this as a teaching aid. Higher and LowerFlash Lots of examples of ordering numbers from simple ordering numbers to 10 to fractions, decimals or negative and positive numbers. Thinking of a NumberFlash Children need to guess a number below 100 from clues on the clouds. Chinese Dragon GameTablet friendly Chinese Dragon Game is an ordering and sequencing numbers game based on the Chinese New Year dragon theme. SequencesFlash

Bart the Lover Bart the Lover Written by John Vitti Directed by Carlos Baeza Bart's answer to a month of detention from Mrs. Krabappel is to answer her personal ad with letters from a Mr. Wonderful, but his last laugh is more of a guilty whimper. Voices: Narcia Wallace, Nancy Cartwright, Harry Shearer, Dan Castellaneta, Julie Kavner. Cut from clouds directly to driveway. Also Starring Pamela Hayden (Milhouse) Maggie Roswell (Miss Hoover, Maude Flanders, Helen Lovejoy?) + Pamela Smart, the teacher who had an affair with her 15-year-old student and convinced him to kill her husband - the sexy photo of Ms. The stupid movie Milhouse is asleep Bart yawns Nelson carves on his desk with a knife Martin works the projector [It's funny 'cause it's true. Chef Lonely-Hearts ``Soup for One'' Chicken Noodle picture of a pretty depressed looking chef on the label Later in the episode, Ms. Springfield Magazine Cover story: Krusty Picks Springfield's Best Chili ``We Talk With J.D. Ms. The assembly ``Playdude'' Essays Sexual

Related: