Egyptian “Light Bulb”

(go to 1:27:01 in the video). (see footnotes below)  Ancient Aliens: “Are these carvings on a wall at the Dendera complex in Egypt? To some, the strange designs look eerily similar to objects very much in use today.” AA: “In Egypt there is this underground crypt at Dendera that was always secret and only the high priests had access to that crypt. It is very hot in there, very narrow, low ceiling, and on the walls you have these reliefs of what looks like ancient light bulbs. Because we have to question one thing: How did the ancient Egyptians light the inside of their tombs?” This is the Egyptian light bulb theory. Let’s see what we can figure out about it. Let’s start by listening to some of the reasons that Ancient Astronaut theorists believe it’s true. AA: “According to most mainstream archaeologists torches were used by the ancient Egyptians to light the pitch black chambers of tombs and temples, yet nowhere on the ceilings it there even the slightest evidence of soot or smoke residue.” It’s hard to know why they are saying this because there is black soot in almost every Egyptian temple and tomb.[1] In fact a recent ceiling cleaning conducted at the Temple of Hathor, which is the same temple where the so-called light bulb relief is found, they uncovered a brightly colored ancient ceiling painting that had never before been noticed.[2] What was covering it up you ask? I will quote them directly, they said the ceiling was covered with “hundreds of ye[...x]