Filament light bulb is about to leave ...

The State of California (USA) has just passed a bill restricting the sale of most filament bulbs since 2012. Other states like Northern Caroline, Connecticut and Rhode Island are also drafting similar bills.

However, the United States is not the first country in the world to ban filament bulbs. In the UK, the use of this traditional light bulb will be banned from 2009. This is the time when the European Union (EU) regulates from a summit in 2006. 2009 is also the landmark for Australia. will stop producing this product. Canada and Israel will also ban the use of these lamps.

Why is Thomas Edison's genius invention, recorded in a patent from 1881, now cheap? Development science proves that the efficiency of Edison light bulbs is not high: only 5% of energy passes through the wire channel to light, the rest transforms into heat radiation.

According to a study by the Rocky Mountain Institute (USA), exchanging a 75 watt filament bulb with a 20 watt fluorescent light bulb with an equivalent brightness, people will limit the release of air Half a ton of CO ₂ also saves consumers 55 USD thanks to the high durability of fluorescent lamps.

However, not filament bulbs will be " extinct ". It will still work in some areas such as medicine and chemistry. In addition, not a compact light bulb is not defective: not only is it $ 2.50 more expensive than a round bulb than a 46-cent incandescent lamp, it also contains mercury so it cannot be thrown into the trash need to be recycled.

TRAN DUC THANH