toothbrush

Around 1844, the first three-row bristle toothbrush was invented.

toothbrush

Prior to the 1840s, toothbrushes had only one row of bristles. With the benefit of being able to cover a larger surface area in mind, toothbrush makers began introducing changes to the standard toothbrush design in about 1844. Three rows of bristles would later become the standard for most commercial toothbrushes, proving to be more effective than the previous single row.

Related Facts
CATARACT

DROPS FOR CATARACT EYES DO NOT WORK. YET

Crabs

Crabs use the sounds of their pincers and claws to communicate.

sylvia, sylviaplath, plath, depression, literature, poet, poetry, english, visual, visualartist, art

Sylvia Plath originally published 'The Bell Jar' under the pen name "Victoria Lucas."

Inuit art

With a lengthy history, Inuit art is incredible!

Flat Fish

Are Flat Fish Poisonous?

cat, stubbs, mayor, alaska, talkeetna, legislative, elections, tourist

Isaac Newton invented the cat door

METALS

METALS WERE USED IN TRUMPETS AS EARLY AS 1500 BCE.

greece facts, facts about greece, greek islands, greek facts, facts about greeks, greece islands

Did you Know? Evil eye is the most common superstition among Greeks.

queen victoria, queen victoria family tree, who succeeded queen victoria, where is queen victoria bu

Queen Victoria is the second-longest reigning British monarch

Facts about Snow, Snow Facts, Didi you Know

Did you Know? Snow Flakes come in all sizes

traffic lights, red lights

The typical individual will spend six months of their lives waiting for red lights to change to green lights.

met gala, met gala facts, facts about met gala, met gala dresses, met gala designers,

Do you Know? What happens once the guests are inside?

australian animals, native australian animals, endangered australian animals, extinct australian ani

Australia is home to all three types of mammals.

mumbai, mumbai facts, facts about mumbai, mumbai fact, mumbai history, first in india, bombay, bomba

Did you Know? India’s first ever train ran between Mumbai and Thane

fictional, pirates, national, nationalgeographic, appendages

Pirates had a sophisticated mail system and a retirement plan.

candle, candles, romans, wax

A CHANDLER IS A CANDLEMAKER.

the plank.

They did not actually force people to walk the plank.

trombone, players, drumbeat, trombone suicide, head chop

The total length of tubing in a trumpet would be approximately 6 1/2 feet if stretched out completely.

anxiety, anxiety symptoms, anxiety medication, social anxiety, anxiety attack, high functioning anxi

Did you know.... We are all composed of stardust.

asteroids

Some asteroids exhibit comet-like behaviours.

sunflower, Guinness Book of World Records, flowers, Hans-Peter, Germany

Tiny flowers make up sunflowers.

Tunisia, Arab country, Islam

The first Arab country to outlaw polygamy.

lizard, reptile,  tail, autonomy, species

Some lizards can go their entire lives without drinking water.

abominable snowman

The phrase "abominable snowman" was first used by a newspaper columnist.

Migraines

Migraines can be triggered by insomnia.