Electricity can be transmitted through the air using electromagnetic fields and resonant coupling, a technology known as Wireless Power Transfer (WPT) that sends energy from a transmitter to a receiver without wires, enabling applications from charging phones to powering sensors, with recent advancements from Finland showing improved efficiency and range for powering devices in various environments. This method relies on matching frequencies between coils for efficient energy transfer, offering benefits like convenience, reduced wear, and powering hard-to-reach devices, similar in concept to Wi-Fi but for energy, not data.

Electricity can be transmitted through the air using electromagnetic fields and resonant coupling, a technology known as Wireless Power Transfer (WPT) that sends energy from a transmitter to a receiver without wires, enabling applications from charging phones to powering sensors, with recent advancements from Finland showing improved efficiency and range for powering devices in various environments. This method relies on matching frequencies between coils for efficient energy transfer, offering benefits like convenience, reduced wear, and powering hard-to-reach devices, similar in concept to Wi-Fi but for energy, not data. 
How it works
Electromagnetic Fields:-
 A transmitter creates a time-varying electromagnetic field, much like a radio transmitter, but tuned to transfer energy.
Resonant Coupling: -
A receiver tuned to the exact same frequency as the transmitter efficiently captures energy from the field, similar to how a radio picks up a specific station.
Efficiency: -
Techniques like magnetic resonant coupling allow for efficient energy transfer even with misalignment, making it practical for various applications. 
Applications and benefits
Consumer Electronics: -
Charging phones, wearables, and medical implants without direct contact.
Industrial & IoT: -
Powering sensors and equipment in dusty, wet, or hazardous environments where cables are impractical.
Electric Vehicles (EVs): -
Enabling convenient, hands-free charging.
Convenience: -
Eliminates clutter and reduces wear and tear on ports and cables. 
Current advancements
Finland: Leading research, demonstrating systems for longer distances and higher efficiency, potentially turning electricity into a "broadcast service".
Safety: -
Systems are designed to keep energy levels below harmful thresholds, ensuring safe operation. 
    Finland is advancing wireless electricity technology that allows power to be transmitted through the air without physical cables. .
MJF Lion ER YK Sharma 

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