-1
$\begingroup$

If you have read this question and you thought that what is this stupid question then sorry to ask this question to you. Hey reader if you want to increase one student's knowledge then please answer this. Hey reader please answer this in an easy way. I am only in 10th grade\class.

$\endgroup$

closed as unclear what you're asking by user467, Jannis Andreska, LDC3, user7232, jonsca Sep 8 '14 at 4:25

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    $\begingroup$ Very few people will like this question since it looks like you are asking us to do the work for you. If you have a specific question, or you can narrow you request to certain conditions, then you should have better responses. $\endgroup$ – LDC3 Sep 7 '14 at 20:14
2
$\begingroup$
  1. Find a suitable solvent.
  2. Record a UV-VIS spectrum to determine at which wavelength you need to irradiate.
  3. Chose the right glassware. For $\lambda$ = 254 nm, quartz is mandatory. Irradiations at $\lambda$ = 300 nm and above may be performed in pyrex.
  4. Chose the right light source. For $\lambda$ = 254 nm, use a low-pressure mercury vapour lamp. For irradiations at $\lambda$ around 300 or 360 nm, use low-pressure mercury vapour lamps with specific coatings. Medium- or high pressure lamps typically show much broader emission spectra. For experiments at $\lambda$ = 589 nm, use a sodium vapour lamp.
$\endgroup$

Not the answer you're looking for? Browse other questions tagged or ask your own question.