Laws of Physics and Experimental Accuracy

• Experiments done in different countries
• The spectra of different elements
• The light from distant stars (correct)
• Experiments done by different scientists

• The laws of physics have changed over time
• The laws of physics are different from those today
• The laws of physics have stayed the same
• The laws of physics are the same as those in the past (correct)

• The country where the experiment is conducted
• The religion of the scientist conducting the experiment
• The race of the scientist conducting the experiment
• The honesty and correctness of the experiment (correct)