HDR is certainly not a time machine. It is a medical instrument. It has a T-shaped electromagnet that emits a scalar wave magnetic field. When you have cancer, you can have complementary treatment. It's better than chemotherapy. In fact, I would love to travel back in time. Now that tri-axial Helmholtz resonator of mine didn't work either. However, humans don't have the technology to invent a real time machine right now.
One of my ideas was to create black holes on Earth. But making black holes is too difficult. The Swastika radius, which is a critical radius characteristic value for the existence of a black hole for any matter with mass. The formula for the Swasey radius is simple: r = 2Gm/c^2, where G is the gravitational constant (its value is about 6.67 x 10^-11), m is the mass of the object, and c is the speed of light constant. In an electric field. If the electric field force is equal to the centripetal force. Then the obtained voltage is also large.
F=kQ^2/r^2=mc^2/r
My current method of extending one's lifespan is still Chinese herbal medicine. Although it does not make people live forever. But it can prolong one's life span. I also dream of making time machine. See what will happen in the future in China? I am now in a China ruled by the Communist Party. But in the future, China dynasties will change. It will meet other dynasties. Honestly, I really don't know what China will be like in 2048. Maybe it will be very different from now. Europe may face the threat of war. I hope the members from Europe will be well.