Канал: Robert Cruikshank

Symmetric Difference of Sets is Associative

Symmetric Difference of Sets is Associative

How Beta is Conjugate to Binomial

How Beta is Conjugate to Binomial

The Beta Function: Solving the Defining Integral for integer a,b

The Beta Function: Solving the Defining Integral for integer a,b

CDFs for Exponential Rayleigh Weibull and Pareto Distributions

CDFs for Exponential Rayleigh Weibull and Pareto Distributions

Low Pass, High Pass, or Bandpass Filter?

Low Pass, High Pass, or Bandpass Filter?

Counting Radial and Angular Nodes in Atomic Orbitals

Counting Radial and Angular Nodes in Atomic Orbitals

From Complex Roots to Real Solutions

From Complex Roots to Real Solutions

Electric power: Definitions (A Two Minute Video)

Electric power: Definitions (A Two Minute Video)

What is E[E[X|Y]] ?

What is E[E[X|Y]] ?

Adding Vectors: TLDW Version

Adding Vectors: TLDW Version

Adding Vectors: Every. Single. Step.

Adding Vectors: Every. Single. Step.

A Tricky F = ma Problem from Kleppner and Kolenkow 1st ed

A Tricky F = ma Problem from Kleppner and Kolenkow 1st ed

Holder Inequality Lemma: A 2 minute proof

Holder Inequality Lemma: A 2 minute proof

Power and Intensity (an example with sound energy)

Power and Intensity (an example with sound energy)

How Voting Works

How Voting Works

Why Study Cyclohexane?

Why Study Cyclohexane?

Harmonics vs Overtones

Harmonics vs Overtones

Why does the Fourier Trick Work? Using trig not integration by parts

Why does the Fourier Trick Work? Using trig not integration by parts

Moment and Shear All Along a Cantilever

Moment and Shear All Along a Cantilever

From Physics 1 to Engineering Statics: Cantilever Example

From Physics 1 to Engineering Statics: Cantilever Example

Product to Sum Trigonometric Formulas

Product to Sum Trigonometric Formulas

1000 Subscribers!

1000 Subscribers!

Nodes and Antinodes in an Open Pipe

Nodes and Antinodes in an Open Pipe

100 cm^2 is NOT 1m^2! Visual Examples in Metric

100 cm^2 is NOT 1m^2! Visual Examples in Metric

Hydrogen and Energy (clearing up confusion)

Hydrogen and Energy (clearing up confusion)

Force Diagrams Quiz

Force Diagrams Quiz

How to Clean a Quadra-Fire 1200-I Pellet Insert (Stove that fits inside a fireplace)

How to Clean a Quadra-Fire 1200-I Pellet Insert (Stove that fits inside a fireplace)

Deciphering the Definition of Complete Statistic

Deciphering the Definition of Complete Statistic

Force Diagram for a Diving Board

Force Diagram for a Diving Board

The Definition of Sufficient Statistic Looks Weird (a 2 minute remake)

The Definition of Sufficient Statistic Looks Weird (a 2 minute remake)

Location, Scale, and Shape Parameter Families of Probability Distributions

Location, Scale, and Shape Parameter Families of Probability Distributions

The Exponential Family of Distributions

The Exponential Family of Distributions

The Joint PDF of the Min and Max Values of a Random Sample

The Joint PDF of the Min and Max Values of a Random Sample

Finding the Distribution of a Sum of Independent Random Variables

Finding the Distribution of a Sum of Independent Random Variables

The Quarters Arithmetrick

The Quarters Arithmetrick

A Sufficient Statistic for the Poisson Parameter

A Sufficient Statistic for the Poisson Parameter

Sufficient Statistic for p in Geometric Distribution

Sufficient Statistic for p in Geometric Distribution

Maximum Likelihood Estimator (MLE) for theta in Uniform U[0, theta]

Maximum Likelihood Estimator (MLE) for theta in Uniform U[0, theta]

Finding a Sufficient Statistic for a Uniform Distribution on [0, theta]

Finding a Sufficient Statistic for a Uniform Distribution on [0, theta]

The Eisenstein Criterion

The Eisenstein Criterion

Why Do We Use Significant Figures?

Why Do We Use Significant Figures?

Solving One Branch of a Parallel Circuit

Solving One Branch of a Parallel Circuit

Blooper Reel for Robert the Tutor

Blooper Reel for Robert the Tutor

Atomic Energy Levels are Like Your Credit Card

Atomic Energy Levels are Like Your Credit Card

Blog: Working on Statistics

Blog: Working on Statistics

Why Use a Log Log Graph?

Why Use a Log Log Graph?

Potential of an Electric Quadrupole

Potential of an Electric Quadrupole

What is an Electric Quadrupole?

What is an Electric Quadrupole?

How Big is One Degree of Longitude

How Big is One Degree of Longitude

The Idea of pH

The Idea of pH

Acids Bases and pH

Acids Bases and pH

Visualizing the Potential (Voltage ) of Two Positive Charges

Visualizing the Potential (Voltage ) of Two Positive Charges

How Does a Dielectric Change the Charge on a Capacitor?

How Does a Dielectric Change the Charge on a Capacitor?

Get the density of Y = X^2 given the pdf of X: a basic example

Get the density of Y = X^2 given the pdf of X: a basic example

Which one gains electrons: A Balloon or Your Hair? (Triboelectric Series)

Which one gains electrons: A Balloon or Your Hair? (Triboelectric Series)

Two Charges Orbiting Each Other

Two Charges Orbiting Each Other

The Bohr Model: An Electron Orbiting a Proton

The Bohr Model: An Electron Orbiting a Proton

Two Charges: Voltage, Force, Potential Energy, and Terminal Velocity

Two Charges: Voltage, Force, Potential Energy, and Terminal Velocity

A Two Minute Introduction to Approximations

A Two Minute Introduction to Approximations

How Electric Fields Drop off with Distance r: plane, line, point, dipole

How Electric Fields Drop off with Distance r: plane, line, point, dipole

Electric Potential (Voltage) on the Axis of a Uniformly Charged Disk

Electric Potential (Voltage) on the Axis of a Uniformly Charged Disk

How to Find dq: Integrating over Charge Densities

How to Find dq: Integrating over Charge Densities

Electric field E on the Axis of a Charged Ring

Electric field E on the Axis of a Charged Ring

Electric potential V on the Axis of a Charged Ring

Electric potential V on the Axis of a Charged Ring

Electric field E and potential V on the axis of an electric dipole

Electric field E and potential V on the axis of an electric dipole

Electric field on the perpendicular axis of a dipole

Electric field on the perpendicular axis of a dipole

Electric Field of a Long Charged Wire

Electric Field of a Long Charged Wire

Integrals and the Factorial

Integrals and the Factorial

Find the Electric Potential Energy U of More Than two Charges

Find the Electric Potential Energy U of More Than two Charges

Ampere*hour (A-hr), kilowatt*hour (kWh), and electron volt (eV)

Amperehour (A-hr), kilowatthour (kWh), and electron volt (eV)

Electric Field Example with Components Ex, Ey

Electric Field Example with Components Ex, Ey

Puzzle with Electric Charge

Puzzle with Electric Charge

Conductors and Insulators

Conductors and Insulators

Ranked Solubility Rules

Ranked Solubility Rules

What's Black About Blackbody Radiation?

What's Black About Blackbody Radiation?

Which Atom or Ion is Bigger?

Which Atom or Ion is Bigger?

What are Df(a) and Df(a)(x)? Derivative, Gradient, Jacobian, etc.

What are Df(a) and Df(a)(x)? Derivative, Gradient, Jacobian, etc.

Going East Is Not Going Straight: Santa's Elves and Geometry

Going East Is Not Going Straight: Santa's Elves and Geometry

Summary of Kinematics Equations

Summary of Kinematics Equations

How to Prove Discontinuity

How to Prove Discontinuity

What Does Linear Mean? Operators vs Equations

What Does Linear Mean? Operators vs Equations

Carnot, Rankine, Otto, Diesel, Dual, and Brayton Cycles in PV and TS Graphs

Carnot, Rankine, Otto, Diesel, Dual, and Brayton Cycles in PV and TS Graphs

"Adding Upside Down": Resistor, Capacitor, Inductor, Spring, and Mass

"Adding Upside Down": Resistor, Capacitor, Inductor, Spring, and Mass

H+ Ion and Hydronium Ion

H+ Ion and Hydronium Ion

Stress, Strain, Young's Modulus (and k)

Stress, Strain, Young's Modulus (and k)

Torque Changing Angular Momentum in 3D

Torque Changing Angular Momentum in 3D

Visualizing Euler to RK4

Visualizing Euler to RK4

A Skidding Bowling Ball: Rotation Physics Example

A Skidding Bowling Ball: Rotation Physics Example

Flux and Intensity

Flux and Intensity

Precession of a Top

Precession of a Top

sgn(x), |x|, and Derivatives

sgn(x), |x|, and Derivatives

Estimating ln n!

Estimating ln n!

Why Invent Energy in Physics?

Why Invent Energy in Physics?

What's a Dyad?

What's a Dyad?

Unit Vectors and Their Derivatives

Unit Vectors and Their Derivatives

Left and Right in Science

Left and Right in Science

Simple Harmonic Motion and the Unit Circle

Simple Harmonic Motion and the Unit Circle

Introduction to My Some1 Competition Playlist

Introduction to My Some1 Competition Playlist

Why Study Differential Equations? What I Wish I'd Been Told

Why Study Differential Equations? What I Wish I'd Been Told

The Definition of Df(a): An Example of Decoding Mathematics

The Definition of Df(a): An Example of Decoding Mathematics

Starting Lemmas for Spivak's Calculus on Manifolds

Starting Lemmas for Spivak's Calculus on Manifolds

Sufficient, Minimal, Ancillary, and Complete Statistics, with Theorems

Sufficient, Minimal, Ancillary, and Complete Statistics, with Theorems

Building Up From Sets: A Whirlwind View of the Mathematical Zoo

Building Up From Sets: A Whirlwind View of the Mathematical Zoo

Electrochemistry: Which Is Which in 2 Minutes

Electrochemistry: Which Is Which in 2 Minutes

Biot-Savart Law: Straight Wire Example

Biot-Savart Law: Straight Wire Example

Hi to Returning Viewers

Hi to Returning Viewers

YouTube Channel Intro

YouTube Channel Intro

You Can Now Buy Me a Cookie!

You Can Now Buy Me a Cookie!

R linear vs C linear and dimension of spaces over R and C

R linear vs C linear and dimension of spaces over R and C

The Structure of Steel

The Structure of Steel

Ten Ray Diagrams

Ten Ray Diagrams

The Beams of Ray Diagrams

The Beams of Ray Diagrams

Philosophy Texts for Physics Majors

Philosophy Texts for Physics Majors

Double Take One (with jokes)

Double Take One (with jokes)

$Pinhole Size and Diffraction Pattern Size$

Pinhole Size and Diffraction Pattern Size

$Triple Slit Diffraction, N Slit Diffraction$

Triple Slit Diffraction, N Slit Diffraction

A Ladder Force Diagram in Stages

A Ladder Force Diagram in Stages

A Wheatstone Bridge is Not Series or Parallel

A Wheatstone Bridge is Not Series or Parallel

Proof of formulas for sin(A+B) and cos (A+B)

Proof of formulas for sin(A+B) and cos (A+B)

Other Electric Components

Other Electric Components

What is the RC time constant

What is the RC time constant

What are Resistors, Capacitors and Inductors Good For?

What are Resistors, Capacitors and Inductors Good For?

Different Ways to Define a Function

Different Ways to Define a Function

Work and Energy in Two Minutes

Work and Energy in Two Minutes

Physical Model for RHR

Physical Model for RHR

An Example of a Minimal Sufficient Statistic

An Example of a Minimal Sufficient Statistic

Factorization Theorem for Sufficient Statistics

Factorization Theorem for Sufficient Statistics

Formulas for Magnetic Fields

Formulas for Magnetic Fields

Magnetic Field of a Single Point Charge

Magnetic Field of a Single Point Charge

Crystal Families Notation and Symmetry

Crystal Families Notation and Symmetry

Miller Indices for Crystal Planes

Miller Indices for Crystal Planes

Resistor Circuits with Switches

Resistor Circuits with Switches

Miller-Bravais Directions for Hexagonal Crystals

Miller-Bravais Directions for Hexagonal Crystals

Notation for Directions in Crystals

Notation for Directions in Crystals

How to Tell Point Charge Formulas Apart

How to Tell Point Charge Formulas Apart

How to Solve erf(x) = p for x on a TI-83+ Calculator

How to Solve erf(x) = p for x on a TI-83+ Calculator

Scary Science Vocabulary

Scary Science Vocabulary

Molarity, Molality, and Density (Salt water example)

Molarity, Molality, and Density (Salt water example)

Patreon hello

Patreon hello

Triangle Centers

Triangle Centers

Units of Magnetic Charge

Units of Magnetic Charge

Prove Tr(AB) = 0 if A is Symmetric and B is Antisymmetric

Prove Tr(AB) = 0 if A is Symmetric and B is Antisymmetric

Arc Length in 2D

Arc Length in 2D

What is a Buffer? (chemistry)

What is a Buffer? (chemistry)

Blog Entry #2: I'm back!

Blog Entry #2: I'm back!

How to Remember Exponent Rules

How to Remember Exponent Rules

A Way to Sort Your YouTube Playlist

A Way to Sort Your YouTube Playlist

Three Hazard Functions: Examples with Graphs

Three Hazard Functions: Examples with Graphs

Hazard Function Example

Hazard Function Example

Fisher Information Definition

Fisher Information Definition

Statistical Power: The Basic Idea

Statistical Power: The Basic Idea

What if the Sample Proportion is Zero? A 95% Confidence Interval

What if the Sample Proportion is Zero? A 95% Confidence Interval

Point Charge Formulas in Two Minutes

Point Charge Formulas in Two Minutes

Parsing statistics: "constant odds ratio across strata"

Parsing statistics: "constant odds ratio across strata"

Sensitivity Specificity and All That (tree diagrams)

Sensitivity Specificity and All That (tree diagrams)

Probabilities of Sets, Events, and Random Variables (Review)

Probabilities of Sets, Events, and Random Variables (Review)

Conditional Independence Definition and Example

Conditional Independence Definition and Example

Two and Three Way Independence

Two and Three Way Independence

It's Z Scores All the Way Down

It's Z Scores All the Way Down

Greetings 1 22 2021 (blog entry #1)

Greetings 1 22 2021 (blog entry #1)

Percent by Volume Converted to Percent by Mass Example with 3 Gases

Percent by Volume Converted to Percent by Mass Example with 3 Gases

Saturated Vapor Pressure

Saturated Vapor Pressure

Links between Gamma, Chi square, Normal, T and F distributions

Links between Gamma, Chi square, Normal, T and F distributions

Solving nonlinear ODE xyy + 3yy - xxy' = 0

Solving nonlinear ODE xyy + 3yy - xxy' = 0

Is This Curve Left Skewed or Right Skewed?

Is This Curve Left Skewed or Right Skewed?

Keeping Change of Basis Transformations Straight

Keeping Change of Basis Transformations Straight

Size Matters (in Arguments)

Size Matters (in Arguments)

Americans, Your Country Needs You

Americans, Your Country Needs You

Integrating cosine of square root of x

Integrating cosine of square root of x

What is Likelihood? (And why do we care?)

What is Likelihood? (And why do we care?)

Approximating the Change in Volume of a Sphere

Approximating the Change in Volume of a Sphere

When is it Exergonic?

When is it Exergonic?

Signs for Thermodynamics

Signs for Thermodynamics

Statistical Rethinking p 85 R code 4.16

Statistical Rethinking p 85 R code 4.16

The Unit Step Function u(x)

The Unit Step Function u(x)

Tax Brackets: The Main Idea

Tax Brackets: The Main Idea

Maximizing ln f(x) Instead of f(x)

Maximizing ln f(x) Instead of f(x)

Give a function such that...

Give a function such that...

Signs for f f' and f''

Signs for f f' and f''

Breaking up Long Derivative Problems

Breaking up Long Derivative Problems

When is object distance negative?

When is object distance negative?

Sign Conventions for Lenses

Sign Conventions for Lenses

Sign Convention for Mirrors

Sign Convention for Mirrors

Sign Conventions for Lenses and Mirrors Speed Version

Sign Conventions for Lenses and Mirrors Speed Version

Knowing Which Way to Integrate

Knowing Which Way to Integrate

Splitting Up Quantum Confusion: Three "Entangled" Problems

Splitting Up Quantum Confusion: Three "Entangled" Problems

What is a T0 Topology?

What is a T0 Topology?

Prior Distributions: Beliefs about Numbers (Bayesian Statistics)

Prior Distributions: Beliefs about Numbers (Bayesian Statistics)

Main Idea of Bayesian Stats

Main Idea of Bayesian Stats

Forces Right Hand Rule Lightning Round

Forces Right Hand Rule Lightning Round

Right Hand Rule for Magnetic Fields, Lightning Round

Right Hand Rule for Magnetic Fields, Lightning Round

Physics Final Practice Problem

Physics Final Practice Problem

Review of Elenco Electronic Playground 130

Review of Elenco Electronic Playground 130

Tiny Topologies and Notation

Tiny Topologies and Notation

How to Integrate the Bell Curve From -∞ to ∞

How to Integrate the Bell Curve From -∞ to ∞

Why Did Chemists Invent Enthalpy?

Why Did Chemists Invent Enthalpy?

Another Trick for Integrals Containing Sines and Cosines

Another Trick for Integrals Containing Sines and Cosines

What are Enantiomers

What are Enantiomers

The dnorm function in R

The dnorm function in R

How Many Topologies on a Finite Set?

How Many Topologies on a Finite Set?