Vibration is the movement of molecules at various speeds to prevent or allow us to see any thing in our material world. Can you see the light? only it's source,but if your visual spectrum were wider to include infrared you could see the rays of light also. I know the rays are there , we can't see them but if you're in a darkened room and the light peers into a window and catches the dust floating in the air, you know the dust is riding on the rays of light as it enters the room.
Sound is a vibration of a slower magnitude, It cuts through the air unseen also. Music that fills the air can set the soul on fire with joy, and thoughts of our individual pasts. You can feel the vibration of the music if it's loud enough. You know it's there but it's unseen.
What is the vibration of love? You can't see it directly, just manifestations of it are evident. You feel it , and you know where love is, it's in your heart. An unseen vibration that is only seen with the heart. Is it a higher vibration than light? Quite possibly. It travels at the speed of thought over immense distances to find you where ever you are.
Thoughts are unseen also. They are your vibrations created in your mind. Outward ex
There are a lot of things unseen in your life that you can believe in. The belief of a higher source of us all in the form of faith. Believing isn't always seeing.