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![A certain heliumneon laser emits red light in a narrow band of wavelengths centered at 632.8 nm and with a wavelength width (such as on the scale above) of 0.0100 nm . A certain heliumneon laser emits red light in a narrow band of wavelengths centered at 632.8 nm and with a wavelength width (such as on the scale above) of 0.0100 nm .](https://haygot.s3.amazonaws.com/questions/1778545_d868819c7e1b49a28aa179cf3958bc81.png)
A certain heliumneon laser emits red light in a narrow band of wavelengths centered at 632.8 nm and with a wavelength width (such as on the scale above) of 0.0100 nm .
![Growth and development of Arabidopsis thaliana under single-wavelength red and blue laser light | Scientific Reports Growth and development of Arabidopsis thaliana under single-wavelength red and blue laser light | Scientific Reports](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fsrep33885/MediaObjects/41598_2016_Article_BFsrep33885_Fig1_HTML.jpg)