In an experiment, a control is used to establish a baseline to compare the results of the main experiment to. Having a control group rules out any environmental variables, such as temperature and... In an experiment, a control is used to establish a baseline to compare the results of the main experiment to. Having a control group rules out any environmental variables, such as temperature and...
Knives, including small pocket knives, are only allowed in checked bags. Only plastic and round-tip butter knives are allowed as carry-on blades. Most bladed items are allowed in checked baggage, including scissors, razors, swords, axes, box cutters and blade tools, if they are properly wrapped or sheathed.
The Transportation Security Administration allows you to keep standard disposable razors and disposable razor cartridges in your carry-on luggage. The TSA does not consider these razors as a threat because of their size and the fact that it's very difficult to remove the blade from the housing. If you pack your shaving kit in your carry-on bag, you don't need to worry about removing your disposable razor.