Am I allowed to leave a reading lamp on my desk to learn over Shabbos? (Without any extra precautions keeping me from moving/adjusting it)?
Yes. Nonetheless it is advisable to make some type of Heker (sign), to remind you not to adjust it on Shabbos. ראה שו״ת מהרש״ג א, כט. ובשו״ת שואל…



