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March 25 2017

Teilchen Beschleuniger
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Digital speed paint fan art © Daryl Toh 2017. 

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March 24 2017

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March 23 2017

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Well, well, well, Victoria Lautman

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March 19 2017

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March 16 2017


21 GIFs That Explain Mathematical Concepts

var imagebase='file://D:/Program Files (x86)/FeedReader/'; 21 GIFs That Explain Mathematical Concepts 15:55 27.08.2014, Maxx, amazing, World Of Technology “Let's face it; by and large math is not easy, but that's what makes it so rewarding when you conquer a problem, and reach new heights of understanding.”

Danica McKellar

As we usher in the start of a new school year, it’s time to hit the ground running in your classes! Math can be pretty tough, but since it is the language in which scientists interpret the Universe, there’s really no getting around learning it. Check out these gifs that will help you visualize some tricky aspects of math, so you can dominate your exams this year.

Solving Pascal triangles:
Use FOIL to easily multiply binomials:

Here’s how you solve logarithms:

Use this trick so you don’t get mixed up when doing matrix transpositions:

What the Pythagorean Theorem is really trying to show you:

Exterior angles of polygons will ALWAYS add up to 360 degrees:

If you’re studying trig, you better get pretty comfortable with circles. Check out this visualization that shows what you’re really looking at when you deal with pi:

If an arc of a circle is the same length as its radius, the resulting angle is one radian:

Visualizing sine (red) on the Y axis and cosine (blue) on the X axis. The relative position of the circle is shown in black:
This shows the same thing, but a bit more simply:

Here’s how sine and cosine apply to triangles:

Cosine is the derivative of sine:

Tangent lines:

Flipped on its side, the shape begins to make more sense:
Converting a function from Cartesian to Polar coordinates:

Drawing a parabola:

The Riemann sum is the approximate area under a curve:


Translating that into 3D, you get a hyperboloid. Believe it or not, it’s made with completely straight lines:

Seriously. You can even make it do this:

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March 14 2017

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Und übrigens: Masern sind die Treuepunkte der Homöopathie
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March 13 2017

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Master List of Lesbian & Bi Women Books Recommendations


Rubyfruit Jungle by Rita Mae Brown

The Well of Loneliness by Radclyffe Hall (review)

The Color Purple by Alice Walker (review)

Orlando by Virginia Woolf (review)


Nevada by Imogen Binnie (review)

My Education by Susan Choi (review)

Missed Her by Ivan Coyote (review)

Drag King Dreams by Leslie Feinberg (review)

Just Girls by Rachel Gold (review)

Painting Their Portraits in Winter by Myriam Gurba (review)

When Fox is a Thousand by Larissa Lai (review)

The Collection edited by Tom Leger and Riley Macleod (review)

Lost Boi by Sassafras Lowrey (review)

Hero Worship by Rebekah Matthews (review)

Hymnal for Dirty Girls by Rebekah Matthews (review)

Lizzy & Annie by Casey Plett (review)

Juliet Takes a Breath by Gabby Rivera (review)

(You) Set Me On Fire by Mariko Tamaki (review)

Written on the Body by Jeanette Winterson

Historical Fiction:

The Last Nude by Ellis Avery (review)

Miss Timmins’ School for Girls by Nayana Currimbhoy (review)

Prairie Ostrich by Tamai Kobayashi (review)

Fingersmith and Tipping the Velvet by Sarah Waters

The Passion by Jeanette Winterson


Sisterhood by Julie R. Enszer (review)

Bodymap by Leah Lakshmi Piepzna-Samarasinha (review)

When I Was Straight by Julie Marie Wade (review)

If Not, Winter: Fragments of Sappho edited by Anne Carson

Young Adult:

Starting From Here by Lisa Jenn Bigelow (review)

The Miseducation of Cameron Post by emily m. danforth (review)

Down to the Bone by Mayra Lazara Dole (review)

The Difference Between You and Me by Madeleine George (review)

Silhouette of a Sparrow by Molly Beth Griffin (review)

You Know Me Well by Nina LaCour and David Levithan (review)

Empress of the World by Sara Ryan

Under Threat by Robin Stevenson

As I Descended by Robin Talley (review)

The House You Pass On the Way by Jacqueline Woodson (review)

SFF Young Adult:

Love In the Time of Global Warming by Francesca Lia Block (review)

Labyrinth Lost by Zoraida Cordova (review)

Of Fire and Stars by Audrey Coulthurst (review)

All Good Children by Dayna Ingram (review)

Adaptation (review) and Inheritance by Malinda Lo (review)

Natural Selection (Adaptation 1.5) by Malinda Lo (review)

Will of the Empress by Tamora Pierce (review)

Ice Massacre by Tiana Warner (review)

Sci Fi:

Tierra Del Fuego, Colony Ship: Parting Shots by Caron Cro (review)

Ascension by Jacqueline Koyanagi (review)


Kushiel’s Dart by Jacqueline Carey (review)

The Narrows by m. craig (review)

Indigo Springs by A.M. Dellamonica (review)

Kissing the Witch by Emma Donoghue

Long Hidden: Speculative Fiction from the Margins of History edited by Rose Fox and Daniel José Older (review)

The Last Mango by Shira Glassman (review)

The Salt Roads by Nalo Hopkinson (review)

Falling In Love With Hominids by Nalo Hopkinson (review)

Sister Mine by Nalo Hopkinson (review)

Fire Logic by Laurie J. Marks (review)

Everfair by Nisi Shawl (review)

Hellebore & Rue edited by JoSelle Vanderhooft and Catherine Lundoff (review)


Fist of the Spider Woman edited by Amber Dawn (review)

The Gilda Stories by Jewelle Gomez (review)

Eat Your Heart Out by Dayna Ingram (review)

The Haunting Of Hill House by Shirley Jackson (review)

Daughters of Darkness: Lesbian Vampire Stories by Pam Kesey

The Red Tree by Caitlin R. Kiernan (review)

Better Off Red by Rebekah Weatherspoon (review)

Romance & Erotica:

Rescued Heart by Georgia Beers (review)

A Pirate’s Heart by Catherine Friend (review)

The Long Way Home by Rachel Spangler (review)

Macho Sluts by Patrick Califia (review)

Say Please: Lesbian BDSM Erotica edited by Sinclair Sexsmith (review)


Fun Home by Alison Bechdel (review)

Darlin’ It’s Betta Down Where It’s Wetta by Megan Rose Gedris (review)

The One Hundred Nights of Hero by Isabel Greenberg (review)

100 Crushes by Elisha Lim (review)

On Loving Women by Diane Obomsawin (review)

Revolutionary Girl Utena manga by Chiho Saito (review)

Lumberjanes by Noelle Stevenson, Grace Ellis, and Shannon Watters

Supermutant Magic Academy by Jillian Tamaki

Jem and the Holograms by Kelly Thompson and Sophia Campbell

Charm School Book One: Magical Witch Girl Bunny by Elizabeth Watasin (review)

War of Streets and Houses by Sophie Yanow (review)


Two or Three Things I Know for Sure by Dorothy Allison (review)

The Family Tooth by Ellis Avery (review)

When We Were Outlaws by Jeanne Cordova (review)

Prairie Silence by Melanie Hoffert (review)

First Spring Grass Fire by Rae Spoon (review)

Gender Failure by Rae Spoon & Ivan E. Coyote (review)

Before the Rain: A Memoir of Love & Revolution by Luisita Lopez Torregrosa (review)

Licking the Spoon: A Memoir of Food, Family and Identity by Candace Walsh (review)


Persistence: All Ways Butch and Femme edited by Ivan Coyote and Zena Sharman (review)

Sexual Fluidity: Understanding Women’s Love and Desire by Lisa M. Diamond (review)

Inseparable: Desire Between Women In Literature by Emma Donoghue (review)

Queers Dig Time Lords edited by Sigrid Ellis and Michael Damian Thomas (review)

Aimée & Jaguar: A Love Story, Berlin 1943 by Erica Fischer

Kicked Out edited by Sassafras Lowrey (review)

The Whole Lesbian Sex Book by Felice Newman (review)

Dear John, I Love Jane edited by Candace Walsh and Laura Andre (review)

If you like what we do here, support FYLL & the Lesbrary on Patreon for $2 or more a month and be entered into monthly book giveaways!  Or buy us a coffee on ko-fi if you’re generous!

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March 07 2017

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March 06 2017

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Verdammte Katze
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