The longer the length of the wiper, the more area will be scraped?

Some people think that the wiper blade is found to be working, but there will still be some dead corners on both sides of the front stop, which is difficult to scrape. Is it not the longer the length of the wiper, the larger the area to be scraped, the better the driver's field of view.

In fact, the wiper blade is not the longer the better. Because, although the length of the wiper blade can increase the scope of visual field, it will also increase the burden of the wiper and the wiper rod. Of course, the appropriate extension can be, but to ensure normal work, must not put the cart before the horse, blindly pursue the degree of the wiper blade, so as not to hinder the normal work of the wiper.