Yantra.

The way we store memory within our hard drive, memory card, SD card, etc. So the memory of the space is stored within Yantra. Yantra means Machines/device. Galileo once said, To know about the Universe we should know it's a language & the language of the cosmos is in the geometrical figures like a circle, triangle, etc.

The combination of these figures makes a pattern or rather we can say a web similar which is within our cosmos & the way we have all the letters and images floating in the air & via radio, phone, etc device we match the frequency & capture those sound, images which show up or sound accordingly on our device, similarly the pattern of yantra matches with some frequency in our space & via mantra the energy is been stored. There are many types of yantra & all the ancient temples of Bharat got these yantras either carved on the ceiling or on flooring especially center of a temple or main deity room, on the ceiling like an umbrella or carved on some metal, asan & kept where the deity is been placed.

Our ancestors knew about the language of the Universe & so yantra was been made since the creation, the havan kund/homa which is million years old practice was/is always made above a yantra drawn by various powders, flowers. Every temple, houses, etc at a particular place, these yantras are been kept, it has the capacity to absorb rays from the cosmic energy & remains stored within. Diffrent metal like Gold, Silver, Copper are used for diffrent yantras with diffrent uses. For eg Sri Yantra is used for attracting Laxmi/Money, Sudarshan yantra is used as a Kovach/protection from negative energy & so on.