Is Lodestone a permanent magnet?

Is Lodestone a permanent magnet? The lodestone is an extremely rare form of the mineral magnetite (Fe3O4) that occurs naturally as a permanent magnet. What type of magnet is a fridge magnet? Refrigerator magnets are usually made from materials that are ferrimagnetic. Similarly, refrigerator magnets are made of a material that is permanently magnetized – […]

What is the definition of conceptual?

What is the definition of conceptual? The definition of conceptual is something having to do with the mind, or with mental concepts or philosophical or imaginary ideas. An example of conceptual is when you formulate an abstract philosophy to explain the world which cannot be proven or seen. What is an example of a conceptual […]

Are humans the smartest animal?

Are humans the smartest animal? Despite the prevailing belief that humans dominate the animal kingdom when it comes to smarts, we’re actually ranked as the third-smartest species on the planet — at least according to Douglas Adams, author of “Hitchhiker’s Guide to the Galaxy.” But joking aside, there is something to be said for Douglas’ […]

Why was Arctic sea ice so low in 2012?

Why was Arctic sea ice so low in 2012? It’s clear that Arctic sea ice is declining over time, although there are ups and downs each year. And scientists say the melt has been driven by both global warming and other pollutants that humans have put into the atmosphere. What was the sea ice minimum […]

What is a watershed explain?

What is a watershed explain? A watershed is an area of land that drains all the streams and rainfall to a common outlet such as the outflow of a reservoir, mouth of a bay, or any point along a stream channel. Why do we need watersheds? Watersheds are important because the surface water features and […]

How long does a passive RFID tag last?

How long does a passive RFID tag last? about 20 years What is inside a passive RFID tags? In PASSIVE RFID Tags we have generally two main components. One is ANTENNA COIL and another is MICROCHIP. As you can see in the above image, there is no BATTERY or any other ACTIVE POWER here. How […]

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