1. My flight was overbooked. (overbooked = there were too many passengers and not enough seats)
2. My flight was delayed/canceled.
3. My luggage was lost.
4. I was jet-lagged. (= I felt tired because of the time zone difference between my origin and destination)
5. My hotel was in a seedy area. (seedy = possibly unsafe)
6. I was mugged. (= I was robbed on the street)
7. The weather was miserable.
8. I got the runs. (= diarrhea)
9. The place was a tourist trap. (= made only for tourists; not authentic)
10. I couldn't wait to get back home.

Precautions while using Cathode Ray Oscilloscope

measurement of frequency

An unknown frequency source signal generator is connected to y plates of C.R.O . Time base signal is connected to x plates internally connected . We get a sinusoidal wave on the screen, after the adjustment of voltage sensitivity band switch Y plates and time base band switch X plates . The horizontal length l between two successive peaks is noted. When this horizontal length l is multiplied by the time base m i.e. sec div , we get the time period T .The reciprocal of the time period 1 T gives the frequency f . This can be verified with the frequency, measured by the multi meter.