#Artistic licence physics license

In the Marvel Universe, Promethium is used as the name of an extradimensional metal with magical properties.

In The DCU, it's their version of adamantium.

Promethium: (In the real world, it's a radioactive metal with no stable isotopes.).

A back-bent reversed-blade sword like Kenshin uses would therefore be difficult to achieve, but one supposes this is why Arai Shakkuu was an Ultimate Blacksmith. They were forged straight, but naturally bent backwards when cooled due to differing thermal expansion coefficients between the spine and edge sides of the blade. In real life, katanas acquire that curve because of a quirk of forging: due to chronic shortages of high-quality steel, Japanese smiths forged swords from multiple pieces of steel of varying compositions that were forge-welded together. It still has a backwards curve like a normal katana.

Rurouni Kenshin: Kenshin uses a sakabatou, a katana with the sharp and blunt sides reversed so that it cannot cut when gripped normally (instead it just breaks bones).

This doesn't diminish its customer base, as junkies aren't exactly rational or forward-thinking. One person she suborns such is Rally's father.

She gets a lot of mileage out of this, tearing through the few rivals she can't buy out by simply subverting their forces. It does have one exactly one downside It puts users in a hypnotic state, enabling them to be used as catspaws.This eventually gives Goldie Vetinari Job Security once she abandons her obsession with Rally, as the city can either have Kerasine addicts and her as its sole overboss or their previous morass of crackheads and the constant war between the gangs and numerous crime syndicates. The resulting Functional Addicts just buy and buy and buy. Long-term users don't even seem debilitated in any perceivable way. It has very low toxicity, as in no-one in-story - even in the background - ever overdoses on it.She thus takes customers from three existing groups and keeps them, especially as. It replicates the effects of three entirely different and distinct drugs - a small amount is a stimulant like cocaine, a larger amount is a euphoric similar to heroin, and the entire contents of a vial combines both with a powerful hallucinogenic effect like phencyclidine or lysergic acid diethylamide.

#Artistic licence physics license

Goldie expects her rivals to take several years to reverse engineer it, making it basically a license to print money.

It's as cheap to make as methamphetamines - though possibly requiring expensive equipment as Bean is sent halfway across the country to New York for a shipment - so Goldie can undercut all her rivals.

Gunsmith Cats: A key element of Goldie Musou's plot arc is her basically being the Einstein of pharmaceuticals, having created the recreational chemical equivalent of the atomic bomb 'Kerasonin Citrasine' AKA 'Kerasine' is basically an excuse for one woman to come out of absolutely nowhere to dominate organized crime in Chicago.

Mirror Chemistry is often a specific form of this.

Not to be confused with Elemental Rock-Paper-Scissors granted, elements don't work that way either in Real Life.

Technicolor Science: Chemistry is much more colorful than in real life.

Gold Is Yellow: The distinctive yellow color of gold is exaggerated.

Flaming Meteor: Rocks and ice don't burn, they melt, and the glow of a meteor is the air being super-pressurized.

And Some Other Stuff: Avoiding specifying steps of the process to ward off attempts to replicate at home.

Kryptonite doesn't have to have anything to do with Krypton.

It is worth bearing in mind that several substances in Real Life (especially commercial medicines and cosmetics) are marketed under names that would make a proper chemist wince, and there's no reason the fictional world should be any different.

May very, very rarely intersect with Science Marches On, but usually this trope applies either where science has already long since marched on, or some twisted path entirely off the parade route. There may be some overlap when real names are used for obviously fictional elements. Such is usually done in service of the Rule of Cool. When a work of fiction creates a new trait of a known element or compound-as opposed to Unobtainium, which generally just makes up new substances out of whole cloth.