Hologram has been used to bring to life celebrities that have passed away.
Hologram is a three-dimensional (3D) image formed by the interference of light beams from a laser or other coherent light source. Defined by dictionary.com. Hologram, known as Holography was invented in the year 1962 by three people in the Univeristy of Michigan. There have been various types created over the years. An object or person is needed to form a Hologram.
Once the object or person is chosen, a laser beam is shined upon the object or person. The laser beam is divided into two identical beams. And averted by the use of mirrors. One of the beams(reference beam) is reflected away from the object or person onto the recording medium.
Meanwhile the other beam is illuminating directly to the object or person. It is known as the illumination beam.
The High-Tech 3D images (holograms) have been used for example at Coachella one time, where the deceased artist Tupac was brought to life. He was brought to life on stage. Also, Elvis Presley another deceased artist has been brought back to life.
Few years later, Michael Jackson returned to life at the Billboard Music Awards. In the year 2016, deceased artist Whitney Houston was brought to life. Thus to perform a duet with Christina Aguilera on stage. The famous Mexican artist Jenny Rivera was brought back from the dead with a performance on stage.