Tuesday, August 18, 2015

Pi Irrational And Transcendental Number (Math) Skin For 17" Laptop


tagged with: pi irrational and transcendental number, math teacher, irrational and transcendental, mathematician, mathematical constant, words and unwords, math, definition of pi, geek humor, pi symbol

No need to be a mathematician to enjoy any of these pi, the mathematical constant, gifts with the truism caption "Irrational And Transcendental Number". Make others do a double-take about the properties of pi as a unique number in the fields of math and science with any of these educational gifts!

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This Machine Is Powered By Ascorbic Acid (Vit. C) Small Square Tile


tagged with: this machine is powered by, ascorbic acid, vitamin c, words and unwords, chemistry, chemical molecule, geek, vitamin c fan, chemical structure, humor, science, attitude, saying

If you are powered by Vitamin C, you'll enjoy any of these scientific, educational chemical molecule gifts featuring the ascorbic acid molecule along with the saying "This Machine Is Powered By Ascorbic Acid".

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Lost In The Fifth Dimension? (Geometry Cube Humor) Letterhead


tagged with: math, geometry, fifth dimension cube, lost in the 5th dimension, geek, humor, attitude, funny, words and unwords, dimensional, saying, educational

Showcase your wry geek attitude with any of these gifts featuring a cube as represented in the fifth dimension along with the following query: "Lost In The Fifth Dimension?" Make others do a double-take with a dose of math and geometry humor today!

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Team Morse Code (Communication Dots & Dashes) Round Wallclock


tagged with: team morse code, morse code, communication, dots, dashes, dots and dashes, words and unwords, radio operator, attitude, pilot, cryptographer, telegraph, signal language, electronics, educational, dits and dahs

Fans of International Morse Code will enjoy any of these timeless communication attitude gifts featuring all of the dots and dashes in International Morse Code along with the caption "Team Morse Code". Memorable gifts for radio and ham operators and anyone who knows Morse Code!

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Alive The Condition Of My Existence (ECG/EKG) Postcard


tagged with: alive,heartbeat,electrocardiogram,medical,medicine,the condition of my existence,words and unwords,geek humor,humor,saying,attitude,geek

No need to be an emergency medical technician to enjoy wry medical electrocardiogram humor with any of these gifts featuring a normal sinus rhythm on an ECG/EKG along with the following saying "Alive The Condition Of My Existence". Make others do a double-take with a dose of scientific heartbeat fun today with these memorable saying gifts! Perfect gag gift for anyone alive!

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The Skin Doctor Is In (Anatomy Dermatology) iPhone 5C Covers


tagged with: dermal layers, words and unwords, the skin doctor is in, dermatology, anatomy, skin, anatomical, dermatologist, medicine, doctor is in

Dermatologists will enjoy any of these gifts featuring all key anatomical parts of the human skin along with the saying that will make others do a double-take: "The Skin Doctor Is In".

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Changing Moment To Moment (Magnetism Humor) Letterhead


tagged with: moment, magnetic quadrupole moment, magnetic fields, magnetism, funny, truism, geek, humor, changing moment to moment, words and unwords, saying, attitude, quadrupole moment, magnets, psyche, psychology, physics, physicist, psychologist, truisms

Are you changing from moment to moment? Make others do a double-take with any of these wry magnetic gifts featuring the magnetic quadrupole moment, along with the tongue-in-cheek truism saying "Changing Moment To Moment". Educational physics and psychology fun for all those who understand the physics definition of moment!

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Put My Money On Sun Solar Energy Source Of Power Dart Board


tagged with: words and unwords, solar energy, quotation, thomas edison, sun, edison, money, source of power, energy, solar fan

The sun has a lot of energy. Solar energy enthusiasts will enjoy any of these Thomas Edison quote gifts that contain one of Edison's quote about the sun and solar energy: "I'd put my money on sun and solar energy. What a source of power!" Gifts for Thomas Edison enthusiasts, entrepreneurs, scientists, and anyone who understands the power of solar energy!

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Molecular Biologist Inside (DNA Replication) T Shirt


tagged with: molecular biologist inside, molecular biology, dna replication, words and unwords, dna, geek humor, molecular biologist, biologist, biology

Showcase your wry molecular biology side with any of these gifts featuring DNA replication along with the saying "Molecular Biologist Inside". Make others do a double-take with a dose of educational, scientific molecular biology attitude today! Perfect gift for anyone who works in the biotechnology industry.

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Life Is A Game Bridge Is Serious (Four Card Suits) Jumbo Tote Bag


Bridge players of all ages will enjoy any of these gifts featuring the four card suits along with the often heard saying at the bridge table: "Life Is A Game Bridge Is Serious". Make others do a double-take about how seriously you take the game of bridge with any of these bridge humor saying gifts!

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LIBOR $350 Trillion Financial Scandal Warning Sign Dartboards


tagged with: libor, london interbank offered rate, 350 trillion financial scandal, sign, signage, yellow diamond warning sign, economics, financier, stock market, words and unwords, economist, humor, geek, sarcasm, attitude, financial scandal, econ, not the first, not the last, warning sign, money, currency

You know about the current $350 trillion -- yes, that's trillion - LIBOR financial scandal, don't you? No need to be an economist or financier to enjoy any of these wry signage humor gifts featuring the yellow diamond warning sign along with the following truism saying about the latest financial scandal on Wall Street: "LIBOR $350 Trillion Financial Scandal Not The First & Not The Last". Make others do a double-take with contemporary economics / financial attitude today!

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Paradigm Shift Begins With Psychology (Illusion) Double-Sided Standard Business Cards (Pack Of 100)


tagged with: paradigm shift begins with psychology, psychology, psyche, illusion, optical illusion, duck-rabbit illusion, geek, humor, attitude, words and unwords, scientific, scientific revolutions, wordsandunwords, riddles, brain teasers

No need to be a psychologist to enjoy introducing yourself with these business cards featuring the infamous duck-rabbit illusion along with the saying "Paradigm Shift Begins With Psychology". Make others do a double-take about shifting their views on any particular subject with a dose of intelligent attitude!

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Monday, August 17, 2015

Sulfur Dioxide Plume Eruption Mt. Etna Italy T-shirts


tagged with: nature, satellite imagery, picture earth, sulfur dioxide plume, eruption, volcanic eruption, mt. etna, italy, satellite picture, wordsunwords, wordsandunwords, science, attitude, earth science, geographer, scientist, geography, earth scientist, volcano, earth imagery, miscellaneous

No need to be an earth scientist or fan of volcanoes to enjoy any of these vivid satellite imagery gifts featuring the "Sulfur Dioxide Plume From Continuing Eruption of Mt. Etna, Italy". Make others do a double-take of sulfur dioxide plumes from outer space with any of these Picture Earth gifts! No need to have visited Mt. Etna Italy to enjoy!

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Life Is A Renal Existence (Kidney Nephron) Postage Stamps


tagged with: life is a renal existence, kidney nephron, kidney, nephron, renal existence, saying, anatomy, medical, nephrologist, words and unwords, geek, humor, attitude, nephrology, anatomical, renal

Nephrologists, along with kidney donors and recipients, will enjoy sending correspondence with this wry anatomical nephron attitude stamp featuring the truism saying "Life Is A Renal Existence". Make others do a double-take with a dose of educational, scientific, medical fun with this postage featuring a kidney's nephron, complete with all key parts.

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I Always Operate On A Convoluted Cycle (Krebs) Tshirt


tagged with: krebs cycle, citric acid cycle, tcac, tricarboxylic acid cycle, convoluted cycle, biochemistry, chemistry, chemist, biologist, biology, science, scientist, funny, humor, geek, saying, truism, joke, engineer, biochemist, wordsandunwords, words and unwords, wordsunwords, medical, energy, atp

If you operate on a convoluted cycle, you'll enjoy any of these wry scientific humor gifts featuring the Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle (TCAC). Comes with the saying: "I Always Operate On A Convoluted Cycle". Make others do a double-take with any of these biochemistry gifts today! Memorable gifts for doctors, nurses, scientists, and anyone who operates on a convoluted cycle!

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P53 Pathways Inside (Cell Molecular Biology) Double-Sided Oval Ceramic Christmas Ornament


tagged with: p53 pathways, tumor suppressor gene, tumor suppressor protein, pathways, cell biology, biology, molecular biology, words and unwords, educational, scientific

P53 is a tumor suppressor protein, as encoded by the TP53 gene, and plays a key role in preventing genome mutation, and thus, by extension, plays a key role in preventing cancer. Showcase your educational, scientific side with any of these gifts featuring "P53 Pathways Inside". No need to be an oncologists, cell biologist, or molecular biologist to enjoy!

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Different Fates Of The Universe In Perspective Letterhead


tagged with: accelerating, decelerating, different fates of the universe, you are here, astronomer, physics, astrophysicist, universe, geek, words and unwords, astronomy, physicist, fates, fates of the universe, science, scientist, humor, attitude, funny, sarcasm, graph, saying, definition, direction, lifestyle

No need to be an astronomer or astrophysicist to enjoy wry scientific humor with any of these gifts featuring "Different Fates Of The Universe In Perspective" with a "You Are Here" callout. Whether you believe that the universe if decelerating or accelerating, showcase your grand scheme of the fates of the universe in perspective with this humorous graph! Make others do a double-take on where the universe is headed today!

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Do Me A Favor Think Periodically (Periodic Table) Double-Sided Standard Business Cards (Pack Of 100)


tagged with: do me a favor, think periodically, periodic table, periodic table of elements, elements, chemistry, geek, humor, saying, words and unwords, thinker, chemist, scientist, joke, think, favor, funny

Showcase your wry chemistry geek side the next time you introduce yourself with these customizable business cards featuring the Periodic Table of Elements along with the saying that will get others thinking periodically: "Do Me A Favor Think Periodically".

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Totally Solid At My Core (Layers Of The Earth) T-shirt


tagged with: totally solid at my core, core of the earth, earth's layers, layers of the earth, earth science, scientist, geek, humor, attitude, geology, geological, geologist, double entendre, psyche, psychology, saying, funny, science, words and unwords, educational, advice, lifestyle

Are you a totally solid person at the core level? Showcase your wry earth science attitude with any of these gifts featuring the different layers of the Earth, with Earth, of course, having a solid core. Comes with the double-entendre scientific saying "Totally Solid At My Core". Make others do a double-take with a dose of tongue-in-cheek educational humor today!

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Freak Wave Inside (Oceanography Humor) Letterhead


tagged with: rogue wave, freak wave, oceanography, psyche, freak wave inside, humor, geek, wave height, graph, words and unwords, science, oceanographer, earth scientist, scientist, saying, psychology, inside, attitude, waves, truism, truisms

Are you an abnormal person or a freak? Showcase your wry sense of scientific humor with any of these gifts featuring a rogue wave or freak wave. Note: A freak wave is a wave whose height is more than twice the significant wave height (SWH), which is itself defined as the mean of the largest third of waves in a wave record. Comes with the saying "Freak Wave Inside". Freak waves are known to be a natural ocean phenomenon, so let others know that you are an unusual person in a sea of people, so to speak, with any of these scientific humor gifts today!

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Make The Creative Connections Think (Neuron) Basic Round Button Keychain


tagged with: make the creative connections think,neuron,synapse,medical,medicine,anatomy,anatomical,words and unwords,creative person,creativity,connections,humor,geek,attitude,saying,neurologist,psychologist

Are you a creative person? Showcase your wry creative side with a dose of biological attitude with any of these anatomical gifts featuring all key parts of a neuron / synapse along with the truism saying "Make The Creative Connections Think". Make others do a double-take with a dose of scientific fun!

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Carl Linnaeus Father Of Modern Taxonomy Tshirts


tagged with: carl linnaeus,father of modern taxonomy,modern taxonomy,biologist,ecologist,naturalist,scientist,taxonomy,words and unwords,botanist

Naturalists, botanists, and biologists will enjoy any of these gifts featuring a portrait of Carl Linnaeus, Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature in the 18th century. Linnaeus lived from 1707 to 1778 and is known as the "Father Of Modern Taxonomy". Memorable educational gifts for all fans of Linnaeus, also known as Carl von Linné after ennoblement or by his Latin name Carolus Linnæus.

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Pi Irrational And Transcendental Number (Math) Galaxy SIII Case


tagged with: pi irrational and transcendental number, math teacher, irrational and transcendental, mathematician, mathematical constant, words and unwords, math, definition of pi, geek humor, pi symbol

No need to be a mathematician to enjoy any of these pi, the mathematical constant, gifts with the truism caption "Irrational And Transcendental Number". Make others do a double-take about the properties of pi as a unique number in the fields of math and science with any of these educational gifts!

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This Machine Is Powered By Chocolate (Theobromine) Cases For iPad


tagged with: this machine is powered by, chocolate, chocolate molecule, chemistry, chemical molecule, chocoholic, words and unwords, theobromine, geek, humor, attitude, chocolate fan

Showcase your chocoholic geek sense of style the next time you surf the web with this Dodo case featuring the theobromine molecule along with the following saying: "This Machine Is Powered By Chocolate".

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Think Eigenvector (Mona Lisa Restored) Round Clock


tagged with: think eigenvector, math, statistician, mathematician, mona lisa restored, eigenvalues, words and unwords, geek humor, mona lisa humor, geometry, eigenvector, eigenvalue, geek, saying, mona lisa

If you think in terms of eigenvectors, you'll enjoy any of these gifts featuring a mapping of a restored Mona Lisa along with the caption "Think Eigenvector". In this shear mapping the red arrow changes direction but the blue arrow does not. The eigenvectors of a square matrix are the non-zero vectors that, after being multiplied by the matrix, remain parallel to the original vector. Thus, the blue arrow is an eigenvector, with eigenvalue 1 as its length is unchanged.

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Warning! I Get Under People's Skin (Dermal Layers) iPhone 5C Cases


tagged with: skin, warning, anatomy, dermatologist, i get under people's skin, words and unwords, dermatology, humor, geek, saying

Do you frequently get under people's skin -- figurative speaking? Or do you work in the medical field -- for example, dermatology -- and frequently get under people's skin through medical means? Showcase your wry anatomical skin layer sense of humor with any of these gifts featuring the human skin, complete with all key parts labeled. Comes with the advice that will let others do a double-take the next time they come near you: "Warning I Get Under People's Skin". Science humor gifts for anyone with skin!

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EMT Inside (Sinus Rhythm Electrocardiogram) Shirts


tagged with: emt inside, words and unwords, electrocardiogram, medical, medicine, emergency medical technician, sinus rhythm, heartbeat, geek humor

Emergency medical technicians -- and anyone who works in the medical profession -- will enjoy any of these gifts featuring a sinus rhythm on an electrocardiogram (ECG/EKG) along with the caption "EMT Inside". Make others do a double-take on what you do with a dose of wry medical technology humor today!

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Physics Rules For The Moment (Magnetic Quadrupole) Round Clock


tagged with: physics, physics rules, magnetic quadrupole moment, moment, quadrupole moment, physics rules for the moment, geek, magnets, magnetism, words and unwords, physics major, rules, truism, saying, definition, nerd, funny, humor, attitude, sarcasm, riddles, brain teasers

No need to be a physicist to enjoy tongue-in-cheek magnetic humor with any of these gifts featuring the magnetic quadrupole moment along with the wry truism "Physics Rules For The Moment". Make others do a double-take on the use of the word "moment" with a dose of scientific attitude today!

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Put My Money On Sun Solar Energy Source Of Power Letterhead


tagged with: words and unwords, solar energy, quotation, thomas edison, sun, edison, money, source of power, energy, solar fan

The sun has a lot of energy. Solar energy enthusiasts will enjoy any of these Thomas Edison quote gifts that contain one of Edison's quote about the sun and solar energy: "I'd put my money on sun and solar energy. What a source of power!" Gifts for Thomas Edison enthusiasts, entrepreneurs, scientists, and anyone who understands the power of solar energy!

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Madness & Creativity Can All Stem From A Drink 15 Oz Stainless Steel Travel Mug


tagged with: madness and creativity,can all stem from,from a drink,alice,drink me bottle,lewis carroll,john tenniel,drink humor,words and unwords,alice's adventures in wonderland,wonderland humor,wonderland attitude,saying,madness,creativity,humor,geek

Wonderland humor and attitude is alive and well on any of these gifts featuring John Tenniel's drawing of Alice with her "Drink Me" bottle as found in Lewis Carroll's "Alice's Adventures In Wonderland". Includes the following saying that will make others do a double-take on what can happen after taking a drink: "Madness & Creativity Can All Stem From A Drink". Showcase your Wonderland adventure sense of style with any of these Wonderland attitude gifts today!

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Physician Genes Inside (DNA Replication) Tshirt


tagged with: physician genes inside,dna replication,dna,physician,genes,inside,genetics,molecular biology,words and unwords,molecular biologist

Are you a physician from a family of physicians? Showcase your wry physician side with any of these gifts featuring DNA replication and the saying "Physician Genes Inside". Make everyone do a double-take about exactly what type of genes you truly have with a dose of molecular biology humor today!

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Trust Me I'm Your Partner (Bridge Card Suits) Shirts


Showcase your wry bridge / duplicate bridge attitude with any of these gifts featuring the four card suits along with the following sound bridge advice at any partnership desk: "Trust Me I'm Your Partner".

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Equilibrium Is Well-Defined In Theory Not Found iPhone 5/5S Covers


tagged with: economist, economics, supply-and-demand curve, well-defined in theory, but often not found, theory versus practice, words and unwords, graph, supply, demand, geek, humor, attitude, econ

No need to be an economist to enjoy surfing the web and text with any of these cases featuring the supply-and-demand curve. Comes with the economic truism saying: "Equilibrium is well-defined in theory, but often not found in practice." Make others do a double-take at the difference between theory and practice with a dose of economics attitude today!

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My Wife & My Mother-In-Law (Optical Ilusion) Laptop Bags


tagged with: my wife and my mother-in-law, optical illusion, illusion, brain teaser, gestalt, geek, humor, attitude, psyche, words and unwords, psychology

Showcase your knowledge of gestalt the next time you travel with this laptop bag featuring the infamous optical illusion "My Wife & My Mother-In-Law".

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Corporate Restructuring Ahead (Chainsaw Sign) Two-Tone Coffee Mug


tagged with: office humor, corporate restructuring ahead, words and unwords, warning, sign, organizational psychology, transportation sign, mergers and acquisitions, humor, geek humor

Has your position been outsourced? Has your department been reorganized or dissolved? Showcase your wry sense of corporate humor with any of these gifts featuring the diamond yellow warning sign along with the saying "Corporate Restructuring Ahead". Includes chainsaw picture on the sign. No need to work in mergers and acquisitions to enjoy! Perfect gag gift for anyone who has had their position restructured or who works in a dynamic, ever-changing industry!

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Electromagnetic Spectrum (Wavelengths Comparison) Shirt


tagged with: wavelengths, comparison, electromagnetic spectrum, educational, physics, words and unwords, physicist, electromagnetic radiation, spectrum, frequencies

No need to be a physicist or physics teacher to enjoy any of these educational, scientific gifts featuring a comparison of varying wavelengths of the electromagnetic spectrum. "Electromagnetic Spectrum" gifts for those who know about the the range of all possible frequencies of electromagnetic radiation.

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Life Is Nothing But A Renal Existence (Nephron) Wrist Watches


tagged with: renal attitude, renal, kidney, medical, words and unwords, geek, life is nothing but, a renal existence, nephrologist, nephron, attitude, anatomical, humor, saying, excretory system, dialysis patient, nephrology, science, educational

Nephrologists will enjoy this anatomical geek humor watch featuring all key parts of a kidney's nephron along with the following saying: "Life Is Nothing But A Renal Existence".

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Team Biochemistry (Krebs Cycle Citric Acid Cycle) Classic White Coffee Mug


tagged with: team biochemistry, biochemistry, krebs cycle, citric acid cycle, tricarboxylic acid cycle, tcac, chemistry, biology, chemist, biologist, biochemist, mitochondria, science, scientist, scientific, geek, humor, attitude, saying, truism, words and unwords, wordsandunwords, wordsunwords, educational

No need to be a biologist, chemist, or biochemist to enjoy Krebs cycle humor with any of these gifts featuring the Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle (TCAC). Comes with the scientific truism caption "Team Biochemistry". Showcase where you get your energy from with a dose of scientific attitude today with these memorable biochem gifts!

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Time Machine Inside (Open Source Duke) Pet Tags


tagged with: time machine inside, open source, time machine, inside, computer programmer, software engineer, geek, humor, words and unwords, software development, duke, programmer, engineering, software, funny, attitude, future, computers, time, physics, physicist, computer science, computer scientist, software developer, futurist, programming

No need to be an open source programmer or computer scientist to understand any of these gifts featuring Java's Duke going through a time warp, along with the caption "Time Machine Inside". Make others do a double-take with wry open-source humor with any of these memorable gifts! For all software developer fans of the future!

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Warning! Black Smoker Inside (Sea Vent) Round Wall Clock


tagged with: geology, geologist, oceanographer, warning black smoker inside, black smoker, sea vent, inside, humor, geek, words and unwords, vent, funny, psyche, science, attitude, saying, earth science, advice

Do you vent at times? Is there a black smoker inside of you? No need to be an oceanographer or geologist to enjoy wry scientific attitude with any of these gifts featuring a black smoker, a type of hydrothermal vent found on the seabed, typically in the abyssal and hadal zones, that has black chimney-like structures that emit a cloud of black material containing high levels of sulfur-bearing minerals, or sulfides. Comes with the tongue-in-cheek geek humor saying (on most items): "Warning! Black Smoker Inside".

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Grape Knowledge Never Goes Out Of Style Letterhead


tagged with: grape knowledge, never goes out of style, grape, berry, anatomy, anatomical, saying, funny, words and unwords, foodie, fruit, pun

No need to be a wine connoisseur to enjoy any of these gifts featuring all of the details of wine grape berry anatomy along with the following saying: "Grape Knowledge Never Goes Out Of Style". Make others do a double-take about the parts of a grape that goes into wine-making today with these grape saying attitude gifts!

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Dynamic Electric Machine US Patent 390721 By Tesla Classic White Coffee Mug


tagged with: ac dynamo, alternate current, dynamic electric machine, nikola tesla, tesla, radio, wireless, engineer, electrical engineer, inventor, science, scientist, physicist, physics, current, electricity, patent 390721, history, wordsunwords, wordsandunwords, alternating current, words and unwords, machines

Father of the radio and today's wireless world, Nikola Tesla was a significant contributor in the field of electromagnetism in the late 19th and early 20th centuries. Recreated here is Nikola Tesla's patent 390721 of the "dynamic electric machine" -- better known as the AC dynamo on any of these gifts. Nikola Tesla's AC dynamo was used to generate alternate current, which itself was used to transport electricity across great distances. Any of these gifts are perfect for scientists, inventors, electrical engineers, and all who love today's wireless world!

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Carl Linnaeus Father Of Modern Taxonomy Two-Tone Coffee Mug


tagged with: carl linnaeus,father of modern taxonomy,modern taxonomy,biologist,ecologist,naturalist,scientist,taxonomy,words and unwords,botanist

Naturalists, botanists, and biologists will enjoy any of these gifts featuring a portrait of Carl Linnaeus, Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature in the 18th century. Linnaeus lived from 1707 to 1778 and is known as the "Father Of Modern Taxonomy". Memorable educational gifts for all fans of Linnaeus, also known as Carl von Linné after ennoblement or by his Latin name Carolus Linnæus.

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Pi Irrational And Transcendental Number (Math) Round Wall Clock


tagged with: pi irrational and transcendental number, math teacher, irrational and transcendental, mathematician, mathematical constant, words and unwords, math, definition of pi, geek humor, pi symbol

No need to be a mathematician to enjoy any of these pi, the mathematical constant, gifts with the truism caption "Irrational And Transcendental Number". Make others do a double-take about the properties of pi as a unique number in the fields of math and science with any of these educational gifts!

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This Machine Powered By Oxidative Phosphorylation Watch


tagged with: organic chemistry, biology, mitochondria, intracellular, atp, adenosine triphosphate, electron transport chain, oxidative phosphorylation, words and unwords, geek, truism, chemistry, biologist, chemist, saying, krebs cycle, citric acid cycle, science, scientist, humor, attitude, cell biology, matrix, chemical energy

Showcase your wry organic chemistry Krebs cycle side the next time you tell time with this watch featuring a diagram of the electron transport chain along with the following scientific truism: "This Machine Is Powered By Oxidative Phosphorylation". Classic geek attitude gift - no need to be a chemist, biochemist, or biologist to enjoy!

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Think Eigenvector (Mona Lisa Restored)


tagged with: think eigenvector, math, statistician, mathematician, mona lisa restored, eigenvalues, words and unwords, geek humor, mona lisa humor, geometry, eigenvector, eigenvalue, geek, saying, mona lisa

If you think in terms of eigenvectors, you'll enjoy any of these gifts featuring a mapping of a restored Mona Lisa along with the caption "Think Eigenvector". In this shear mapping the red arrow changes direction but the blue arrow does not. The eigenvectors of a square matrix are the non-zero vectors that, after being multiplied by the matrix, remain parallel to the original vector. Thus, the blue arrow is an eigenvector, with eigenvalue 1 as its length is unchanged.

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