Share to: It is our eyes that are capable of detecting a portion of the electromagnetic (EM) spectrum called visible light, or the optical spectrum.We describe the different frequencie â¦ s by color, with red being the lowest of the frequencies we can see.t is our eyes that are capable of detecting a portion of the electromagnetic (EM) spectrum called visible light, or the optical spectrum.
Young dogs can react unpredictably to electric dog fences, so understanding a puppy's development is essential to deciding when to start training the animal with the fence and collar. Generally, puppies should not be introduced to electric dog fences until they're at least four or five months old.
High Tech Pet Containment Systems are Designed for Easy, Reliable Above Ground Installation. Y. es, you can self-install a High Tech Pet  electric dog fence, the best electric. fence for dogs, above ground in less than one hour, saving thousands of dollars compared to a professionally installed electric dog fence.