According to Bluhm and Lougheed, what is the ideal temperature for preserving latent fingerprints on nonporous surfaces?

The ideal temperature for preserving latent fingerprints on nonporous surfaces, as outlined by Bluhm and Lougheed, is in the range of 40 to 55 degrees Fahrenheit. This temperature range helps to prevent the deterioration of the fingerprints while minimizing environmental factors that could cause degradation of the latent prints. Maintaining a stable environment within this temperature range ensures that the characteristics of the print remain intact for analysis and comparison. This understanding is crucial for forensic scientists, as the preservation of fingerprints is essential for accurate identification and subsequent legal proceedings.