JERUSALEM — In a crowded laboratory painted in gray and cooled like a cave, half a dozen specialists embarked this week on a historic undertaking: digitally photographing every one of the thousands of fragments of the Dead Sea Scrolls with the aim of making the entire file — among the most sought-after and examined documents on earth — available to all on the Internet.

Equipped with high-powered cameras with resolution and clarity many times greater than those of conventional models, and with lights that emit neither heat nor ultraviolet rays, the scientists and technicians are uncovering previously illegible sections and letters of the scrolls, discoveries that could have significant scholarly impact.

The 2,000-year-old scrolls, found in the late 1940s in caves near the Dead Sea east of Jerusalem, contain the earliest known copies of every book of the Hebrew Bible (missing only the Book of Esther), as well as apocryphal texts and descriptions of rituals of a Jewish sect at the time of Jesus. The texts, most of them on parchment but some on papyrus, date from the third century B.C. to the first century A.D.

Only a handful of the scrolls exist in large pieces, with several on permanent exhibit at the Israel Museum here in its dimly lighted Shrine of the Book. Most of what was found is separated into 15,000 fragments that make up about 900 documents, fueling a longstanding debate on how to order the fragments as well as the origin and meaning of what is written on them.