Corrected entry: Carter and O'Neil get trapped on a planet where the DHD does not work, they say that eventually they may get rescued by another team, however if the other team gets there then how are they themselves supposed to get back since they cannot dial home and neither can SGC dial up to them since it is said countless times that you cannot go through a wormhole unless you dialed it, i.e. it is a one way thing.
Corrected entry: After Hathor has been burned in her tub, you can see the actress walk offstage to the right of the fire (This is also visible in "Out of Mind" when they remember that part.).
Correction: That's not a mistake. It's part of the story. Hathor got out of the tub and walked away to the stargate.
Corrected entry: Hathor is seen leaving the room, when she is supposed to be dead in the bucket of dead parasites. (00:40:40)
Correction: This has been corrected before; she is not dead.
I am rewatching SG1 and I saw a weird movement then I saw some sort of distorted effect and then you see the (assuming) stuntwoman transitioning out of the room. So of course when I watched this I wondered is she still alive, but she does not appear later in the ep, so I assumed it was a goof.
The transition out of the tub does looks odd (intentionally) and then you see someone that looks like they're walking pass the shot. But Hathor does appear later in the episode, she's seen leaving through the Stargate.
Corrected entry: At the end of the episode The Nox take the stargate to Earth in order to "recue" the Tolen. They then leave before the gate closes. This is a continuity error, as the gate would have needed to be opened on Earth again in order to leave.
Correction: The wormhole does close behind Lya after she comes through. She then reopens the gate (without the typical "kawoosh") and leads the Tollan through.
Children of the Gods (1) - S1-E1
Corrected entry: When Apophis first enters SGC at the beginning, the worm hole shuts down. Then the fight between the SGC personnel and the Jaffa takes place. The scene then switches to some other part of the complex and back again. Suddenly there is an outgoing wormhole established. It is made clear throughout the show, that only very few aliens like the Asgard or The Nox can just establish a wormhole by waving the hand. Earth neither has a DHD (which is known to Apophis) nor does Apophis have access to the gate controls or was there enough time for the Jaffa to dial the gate by hand. Even assuming the scene switches giving enough time to enter the control room, the Jaffa can not be familiar with earth technology as to know how to initiate a dialing sequence on the computer.
Correction: It is later shown that a Goa'uld ribbon device can be used to power/dial a stargate, and in the movie continuum there is a device that can itself dial a stargate, in either case it would be possible.
The Torment of Tantalus - S1-E11
Corrected entry: After the SG-1 team reach the planet and Daniel goes with Earnest to that room with the DHD lookalike object Earnest gives Daniel his diary which says "Like a United Nations of the stars". Earnest was sent there in 1945 before World War II had ended and thus there was no United Nations, it was still the 'League of Free Countries'.
Correction: This is not true; the United Nations did exist from 1942, with the Declaration by the United Nations. The United Nations was the alliance of nations against the Axis Powers, which we now historically call the Allied Powers (a name never used until historians decided on it to distinguish it from what the UN eventually became in 1946). The connotation, however, is different than it would seem; he's describing it as a grand alliance of the stars, not a peacekeeping organization.
Brief Candle - S1-E9
Corrected entry: If O'Neill could return to his normal age at the end of the episode, the population of the foreign world would logically also return to their natural age, which would make their survival pretty unlikely. Made worse by the fact that O'Neill promises to send a team to check on them from time to time.
Correction: Not necessarly, as they clearly explained in the episode, O'Neill was affected differently as he *started* at a much old age, which made him age in a non-perminant way, while the native would "live a long and healthy life"
Corrected entry: Jackson and the MALP are on the ramp to the stargate as "chevron two encoded" comes over the speaker. Dr. Jackson may make it off the ramp before the last chevron is encoded, but the MALP has no chance of making it off the ramp before the outgoing worm hole would engage and destroy it. (00:03:00)
Correction: The MALP sits on the ramp below the "whoosh"'s lowest point, as seen in several episodes, so it is not in any danger.
Corrected entry: When all the soldiers are pointing their guns at the group of Tolan at Maybourne's order, right before Tolan go through the gate, we see a guy standing down his weapon, holding it towards the ceiling. why is he doing this, especially when Maybourne is about to give the order to fire?
Correction: This could be showing how one soldier felt. This could have been purposely done.
Cold Lazarus - S1-E7
Corrected entry: O'Neill's kid was Tyler in 'Stargate' (1994) but here it's Charlie.
Correction: Actually, he is identified at some point as Charlie T. O'Neill. So both could be correct.
Children of the Gods (1) - S1-E1
Corrected entry: When SG-1 appear on Chulak, they have ice on their face. In the rest of the episodes, they don't. Also, Major Samuels uses a radio to say "Close the iris. Close the iris." This is never seen again.
Correction: Carter mentions in the series that the reason they have ice on their faces and why they fall out of the stargate is because they haven't compensated for stellar drift. Once they worked that out, it's a smooth ride through the stargate. As for the Major Samuels thing, He left the SGC after the episode, and they changed procedure.
Children of the Gods (1) - S1-E1
Corrected entry: Right at the start when the Goa'uld come through the stargate they leave back through the stargate after the firefight... with the dialing computers in another room not directly connected to the gate room. And of course they wouldn't know anything about computers. The only person who probably could have ordered the stargate to be opened is Hammond, but it is active even before Hammond meets the Goa'uld, so that leaves him out.
Correction: We see in later episodes that a Goa'uld can fire up the Stargate with a ribbon device.
Corrected entry: Throughout the whole first season and some of the second, Walter or someone else in his position, counts the time it takes for something to get to its destination from when it enters the wormhole. They tend to say something like "Object should reach destination in, 5, 4, 3, 2, 1." But after the first season or two they stop and it is not brought up until later when it is said that travel through a stargate is almost instant, and in one later episode Carter says that it takes about 0.3 seconds on average to travel through a wormhole and that the travel time from the last team to come through the gate was over three seconds and that was a long time. That must mean that 5 seconds would be like traveling from another galaxy in a different dimension through a black hole.
Correction: After the first season Carter and the SGC have been able to better compensate for stellar drift, meaning that a lot less time is needed to reach the destination.
Corrected entry: The DHD of the second Stargate can be seen. It has a point of origin different to that from the gate found in Gizeh. However, after SGC starts using the Antarctican gate at the end of season 3 the glyph indicating the point of origin on the gate and in the computer systems is still as seen on the gate from Gizeh.
Correction: Point of origin is not an aspect of the gate or the DHD. The pyramid with the circle on top is the symbol for Earth. The gates found in both Giza and Antarctica use the same symbol. Carter originally thought the one in Antarctica used a different one because she thought they were not on Earth.
This correction is inaccurate. Every gate and DHD has their own unique point of origin. There's no reason for the Antarctica gate to have the same point of origin as the Giza gate, which was brought from another planet by the Goa'uld. Also, the Antarctica gate's DHD was shown with its own unique point of origin in "Solitudes." It was a filled in circle with a line under it (google image: antartica gate point of origin). When the SGC used the beta gate they ignored that and continued to show the Giza gate's pyramid + sun symbol. Doing so directly contradicted what we had seen before and what we were told about point of origins and therefore is a legitimate goof.
Corrected entry: When Jack first tells Daniel to dial home, he brushes off the edge of the DHD which is covered with about 2 inches of ash, but when we see the DHD in the background just seconds later, it has only a light dusting of ash on it.
Correction: The DHD only has a light dusting of ash because Daniel had to brush the ash off to dial home which is why there is less ash on it.
Corrected entry: The leader of the Tolans who is disgusted by the humans' technological inferiority is wearing a regular earth zipper on his costume.
Correction: Why is this a mistake? A zipper is a simple and effective method of fastening clothes. We have been using it for close to 100 years (1913). Once something so simple is in use, why waste time and money on finding something more fancy? And with all the cultures SG-1 finds, surely some things like buttons, zippers, bows and arrows, candles, etc are going to be the same from culture to culture. There are only so many ways to handle mundane tasks no matter how high your tech level is.
Bloodlines - S1-E12
Corrected entry: At the end, the glyphs on the Dial Home Device are not lit while the gate is open. Also, is the Pri'mta only for males? Teal'c implies so, but in Children Of The Gods Part 2 we see a female Jaffa.
Correction: The glyphs on the DHD are lit up, but you have to look very closely.
Children of the Gods (2) - S1-E2
Corrected entry: Just after Teal'c helps Jack and the others escape, he calls the Stargate by its Earth name. The problem is that all other planets call the Stargate "Chappa'ai" and Teal'c had not yet learned Earth's terminology.
Singularity - S1-E15
Corrected entry: In this episode, when SG-1 are first coming to the planet, you see a billboard. It says the planet's name is Hanka (Rite of Passage also notes this) PX8 987. In Holiday and Fair Game it is called P8X 987. Also, there are windmills in the background. In Rite of Passage, they are gone.
Correction: The reason it was called P8X987 is because the characters can't be expected to remember every name of every planet they've been to exactly. As for the windmills, Niirti had death gliders attack the planet. The windmills could've been destroyed after teal'c and O'neill went through the stargate.
The planet designation is a legitimate error. The issue is that if he look at the billboard in "Singularity" the planet designation is PX8 987, but in "Fair Game" Daniel talks about how Nirrti wiped out everyone on that planet except for one person. However, he refers to it as P8X 987. This is a problem because he flips the X and the 8. It could be a character error, but it's an error.
Correction: But when dialing a world, they always send a probe through first to make sure it is safe and if there is a DHD, so when they send the probe, they could radio the SGC and tell them the DHD is broken which could then be fixed or replaced.
Craig Bryant
Just to add to this: Several episodes established that the protocol for situations where the DHD isn't working is to wait for the SGC to check in on them. Once the SG team explains the problem, over radio, the SGC will send over a portable power source. All they have to do then is hook it up and manually dial the gate to get home. In later seasons, they talk about how the SGC can send a naquadah generator and laptop with the dialing program installed on it.