Technically You could make everything work everywhere with the right tools, but it's not practical, do you want to have transformers on every device?
adapters are only good for low voltage devices cellphones cameras, etc
Adapters, Converters, Transformers
Adapter = there are different types of electrical wall outlets adapter lets you adapt one to the other.
EX: allow you to plug a flat-pinned (US) plug into a round-pinned (European/Asian) outlet.
However, there are at least 13 different configurations around the world, all needing a different adapter, and some countries have several different configurations. Adapters do not change voltage.
Converters = convert voltage
The world runs on two types of electricity: 110/125V or 220/240V. North American devices run on 110/125V electricity while the majority of the world runs on 220/240V. Converters and transformers change the voltage of electricity to match the voltage of your device.
are only for use with ungrounded (2-pin) electric heating appliances or those that use a 'universal' motor (Cordless Phones, Battery charger, curling irons, hairdryers, irons, etc.). Most converters are not designed for continuous use and should only be used for short periods of time, 45- 60 minutes. They should be unplugged when not in use.
Transformers=
They can also be used continuously for long periods of time (unlike converters) and at higher wattages. Like converters, transformers can be either 'Step-Up' or 'Step-Down' or 'Both' with a switch to control the direction in which the transformer is working.
It is recommended that travelers use a transformer that is rated at least 50% higher watt than that of the appliance with which you intend to use it. For example: A 500 Watt appliance should be used with a transformer of at least 750 Watts. Purchase a transformer that is at least 50% higher than the required wattage.
since the MHz are also different some clocks or of by a few
MHz = a unit of frequency, equal to one million cycles per second. the cycle of alternating current, 220
