(The symbol is a Greek letter, 'lambda'.) To avoid confusion, it is best to measure wavelength from the top ... Don't get confused with this quantity frequency. It is not a distance travelled ...

As PMD changes at random for each wavelength, a complex, high-speed feedback control per wavelength is required and this incurs significant costs. Lowering the symbol rate by applying novel ...

The paper is published in the journal Nature. In a world-first, scientists used precisely controlled optical traps, known as "magic-wavelength optical tweezers," to create a highly stable ...

The phase and the group velocity of light propagating in conventional optical media cannot exceed the speed of light in ...

Ultrasound is produced by high frequency vibrations beyond the range of human hearing. The frequency of ultrasound is therefore greater than 20,000 hertz. Ultrasound, like audible sounds ...

Anybody can develop high frequency hearing loss, but it becomes more common with age. Exposure to loud sounds or high frequency sounds are common causes of ear damage in younger people.

Thankfully the symbols they use are (mostly) universal, so once you've learned what each represents (as we explain below) you shouldn't have any problems no matter what you find in your laundry basket ...

Oven symbols can be obscure and if you don't know what they mean, you might not get the best cooking and baking results. But most ovens tend to use similar symbols, so once you've learned what to look ...

These will appear along with the birthday cake emoji, and here are the dates they correspond with: Notably, Snapchat has other friend-related symbols. You can even change your friend emojis on ...

CBSE Class 10 Science Chapter Wise Important Case Study Questions: CBSE board exams are about to get started. Well, the Class ...