Well, the ones from science fiction are often much more extreme. Real minerals and metals have known properties and limitations. But in science fiction, like the unobtainium in Avatar, it has properties that are highly exaggerated for the story's needs. It's super - strong, super - valuable, and has a role in the plot that a real - world material couldn't play without major technological leaps.
Science fiction minerals, metals and compounds can have completely made - up properties. For instance, in some sci - fi stories, there are metals that can generate their own energy fields or compounds that can change their molecular structure at will. In the real world, we are bound by the laws of physics and chemistry. Our real - world minerals and compounds follow these rules, while those in science fiction can break them for the sake of an exciting story.
In science fiction, there are often unique minerals, metals and compounds. For example, in some stories, there is a fictional metal called adamantium which is extremely strong and used in making things like Wolverine's claws in the X - Men series. It represents an idealized super - strong material that doesn't exist in reality yet but is fascinating to think about.
Real metals are elements or alloys that exist in nature or are created through human - made processes with properties determined by atomic structure and chemical bonding. In contrast, fake metals in science fiction are often given properties that are far beyond what real metals can achieve. For example, some science - fiction metals can resist extreme temperatures, be self - healing, or even have magical - like qualities. They are designed to make the science - fictional worlds more exciting and to enable the development of advanced technologies within those fictional universes that would be impossible with real - world metals.
Science - fiction rebreathers are frequently depicted with capabilities far beyond what real - life rebreathers can do. Real - life rebreathers are mainly used for specific activities like diving. But in science fiction, rebreathers can be used in all kinds of strange environments, like on a gas - giant planet or in a toxic - fog - filled alien city. They may also have features like automatic self - repair or infinite air - recycling capacity which are not present in real - life models.
In science fiction, cryogenic chambers are often more advanced and have fewer limitations. They can keep people in suspended animation for centuries or even millennia without any damage to the body or mind, while real - life cryogenic technology is still in its early stages and has many challenges. For example, currently, we can't ensure that the brain will be intact after long - term freezing.
Science fiction planets differ from real ones in multiple ways. Firstly, the laws of physics might be bent on these fictional planets. For instance, some might have gravity that behaves in an unusual manner to create more interesting storylines. Secondly, the ecosystems can be completely fabricated. Instead of the real - world ecological balance, science - fiction planets can host creatures and plants that are a product of the author's wildest dreams, and they can be used as a backdrop to explore various themes like survival, exploration, and the encounter of different civilizations.
In science fiction, society can be vastly different from real society. For example, in some sci - fi works, there might be advanced technology that has completely transformed social structures. In 'Star Trek', they have a post - scarcity economy where people don't strive for material wealth in the same way as in our current society. Also, in many dystopian sci - fi stories, society is highly controlled, like in '1984' where Big Brother monitors every aspect of people's lives, which is thankfully not the case in real life yet.
Well, in science fiction, there's cortosis. It's a metal that can short - out lightsabers in the Star Wars universe. Then there's mithril from Middle - earth in Tolkien's works, which is like a super - light and super - strong metal. And let's not forget about unobtainium, a fictional metal often used in stories when there's a need for a very rare and special metal with extraordinary properties.
Well, one big difference is the portrayal of the forensic scientists themselves. In fiction, they are often super - heroes who can crack any case with their forensic skills. In reality, they are highly trained professionals but face many limitations such as budget constraints and imperfect evidence. And in fictional stories, forensic evidence is usually the key that directly leads to the culprit, while in real - life investigations it's just one part of a complex web of evidence and witness testimonies.
Good alien species are more likely to communicate and establish relationships with humans in a positive way. They might even be part of a galactic alliance that promotes peace. Evil alien species, on the other hand, are usually loners or part of a war - like group. They don't play by the rules and will use underhanded tactics. For example, good aliens might use their powers to heal, while evil ones use them to cause pain.
The most obvious difference is the technology. Real - life castles have moats, drawbridges, and thick stone walls for defense. But in science fiction, castles might have force fields and laser turrets. Also, science - fiction castles can exist in places like other galaxies or on asteroid belts, which is impossible for real castles.