You design an experiment consisting of two identical lasers and two identical photodetectors. each detector is the same fixed distance away from the emitter of each laser. light emitted from the first laser travels only through air before reaching the detector. light emitted from the second laser first travels through a 6.54 m long column of ice before emerging in air and continuing to the detector. the index of refraction of ice is 1.309. the lasers each emit a pulse of light simultaneously. what will be the difference in the times of arrival of the two pulses at the detectors (in ns)?

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.