Stargate - A circular device made of Naquadah invented by the Ancients. It has an inner ring with 39 symbols. The ring spins, activating chevrons which act as a star address. When seven chevrons are locked, the stargate Kawooshes open into a wormhole, whos other end is the stagate at the coordinates entered. Coordinates are entered using a DHD. The first earth gate was found in 1912 Egypt by Professor Langford. The second was found in Antartica by Col. Jack O'Neill and Major Samantha Carter.

Iris - A metal cover on the earth gate that irises open and closed. It is only a few microns from the event horizon of the wormhole, preventing matter from reintegrating upon arrival. The first iris was made of titanium but was destroyed in an encounter with a planet being destroyed by a blackhole. It was replaced by a trinium/titanium iris. The Atlantis stargate has a forcefield for an iris.

MALP - Mobile Analytic Laboratory Probe. A large, wheeled device packed with scientific equipment. It is usually the first device to travel to a new world. The SG-1 equivalent of a probe.

DHD - Dial Home Device. Usually a waist high, circular control panel. There are 19 buttons on the outer ring, 19 on the inner ring, and a single large red button in the center. The rings input a gate address, and the red button acts as the Point of Origin button. Since no DHD was found with the Earth gate, Stargate Command has Macgyvered a DHD out of several super computers. When there are two stargates on a planet, the one attached to its original DHD takes precidence.

GDO - Garage Door Opener. A rectangular, silver device worn on the left arm of a SG team member. The SG team member uses the keypad to enter an IDC code, which opens the Iris in Stargate Command.

UAV - Unmanned Aerial Vehicle. A flying probe used infrequently by Stargate Command. It is unarmed and is equiped with various scientific sensors. It is less powerful than a MALP, but much more mobile. It is launched through the active stargate in a spectacular manner.

Death Glider (Udajeet) - Gou'ald one or two man fighter plane. Equiped with two large-style staff weapons. Launched from a Gou'ald mothership. Powerful, but can be destroyed by a single stinger missile.

Staff Weapon - Gou'ald weapon several feet in length, wielded either as an energy weapon or in hand-to-hand combat. The head of the weapon splits when armed, and emits a blast of plasma when fired. It is powered by a small, green bulb of liquid naquadah. The weapon of choice by most Jaffa.

Zat'ni'katel (Zat Gun) - Serpent shaped Gou'ald hand weapon. When armed, it unfolds. The "mouth" of the serpent opens when fired, emiting a bolt of blue energy. One shot renders the target unconcious, two kills, and three disintegrates. It is often carried by Jaffa, but is not their weapon of choice.

Nice, but how about some dates (season & episode) when we first saw these items?

Fer instance:
Cairo Stargate - The Movie
Antarctic Stargate - Season 1 - Solitudes

First Iris - Season 1 - Children Of The Gods

Something like that.

The second [Stargate] was found in Antartica by Col. Jack O'Neill and Major Samantha Carter.

Not to be nitpicky (perish the thought!) but to be precise the Gate was found by Colonel O’Neill and Captain Carter.

A good idea KAM. Thanks Callie Also, check your mail again please.

Nit. The MALP and UAV aren't "technologies discovered through the Stargate".

It seems that Merat has either dozed off, or has dissolved into a gibbering heap when he realised the size of the job that faced him. Anyway, I’m hijacking his page to continue a conversation from a Season 9 episode of SG-1 in order to help others avoid spoilers.

That said, this conversation will mildly spoil anyone who hasn’t yet seen Season 9’s episode Off the Grid (episode 16) and onwards, so be warned.

We were talking about whether the two battlecruisers Daedalus and Odyssey look identical or not. So far (after broadcast of episode 17 The Scourge), we’ve only seen a brief and fairly distant shot of Odyssey but certainly when I saw her in Off the Grid I immediately thought that she looked different to Daedalus. People on various other bulletin boards then pointed out that the shot of a battlecruiser flying through hyperspace later in that same episode was stock footage of Daedalus and not new footage of Odyssey.

I’ve done a search and have – quite possibly totally illegally – copied a couple of pictures that I found to here. The first pic is of Daedalus, the second of Odyssey. The screencap of Odyssey isn’t as clear as the picture of Daedalus but from what I can see, while they do look very similar in shape, Odyssey seems to have more “stuff” on top. What do others think? We may have to wait until we see more footage of Odyssey to really answer the question of how alike (or not) they are.

Just to complete the trio, I also put up a picture that I found of Prometheus and Daedalus together. Obviously it’s a composite, because they were never seen together in the show, so I don’t know how accurate the relative sizes are. That picture reminds me of whenever I saw Thunderbirds 1 and 2 side by side – it never ceased to startle me how small TB1 was!

Does a Zat really disintegrate at the third shot?

It doesn’t, but the person who has just been shot three times does ...