star trek - Do we ever see a 0-G environment on a Holodeck?

I was reading the TNG Bible and found the following excerpt about Holodecks:

In the holodecks, almost any kind of recreation, training or exercise can be simulated, especially since these same decks can also make potent use of the starship's gravity control system. This also permits, for example, the challenge of skiing any real or imaginable slope or engaging in a variety of mid-air low gravity games and contests.

Now, the thought struck me; I don't ever recall seeing a 0-G (or even reduce gravity) environment simulated on the Holodeck in TNG. Are there any instances in TNG of a simulate environment with changed gravity conditions?

If there are no instances from TNG, instances from DS9 or VOY will also be accepted.

Answer

In Conundrum, we see:

Dr. Beverly Crusher tending to Kristin, a crewmember injured cliff-diving on the holodeck

that holodeck program was Holodeck Program 47-C. So, although we don't observe it in TNG, we assume that in TNG the holodek could manipulate gravity with this program, otherwise Kristin would've fallen straight to the ground! She must have been suspended for a period of time before the jump ended.

In VOY though we do see gravity in operation in Extreme Risk:

On board an orbital shuttle, B'Elanna Torres is preparing for orbital skydiving in the holodeck...[later she] jump[s] out of the shuttle...

So, in order for Torres to accomplish that jump without jumping right onto the floor of the holodeck, the gravity in the holodeck must have been altered.

So, yes, we do see the holodeck manipulate gravity, but not in TNG

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In Harry Potter we are introduced to Kwikspell course in The Chamber of Secrets (and never hear about it again). We see Filch taking courses, presumably by mail. The descriptions of Kwikspell make me think it is for people who are weak in magic (kind of like how Neville was supposed to be when he was younger), but had magic in them nonetheless. However, Ron's comments later in the chapter make it sound like it is mainly for Squibs to learn magic. However, it is strongly implied through out all the books that Squibs are essentially Muggles, and will never be able to do magic. How then is a Kwikspell course supposed to work? Do we have any information to know if it works at all? Is it a scam? An answer from any level of canon is welcome. Answer Kwikspell courses are (probably) useful to some wizards, but not to squibs. The Kwikspell course literature comes with two testimonials. Madam Z. Nettles of Topsham writes: ‘I had no memory for incantations and my potions were a family joke...

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When I saw the original Star Wars saga as a kid, the concept of the Dark Side imprinted in me was quite simple. You did a bad thing, so you're a bad person so you go to the Dark Side and keep doing bad things. Now, obviously this doesn't hold true in reality. In my mind it is perfectly reasonable for Luke to kill the Emperor and Vader and then just flee the Death Star and rejoin the Alliance. After all they are at war, those are enemy officers that have captured him and are taunting him by threatening with death of all loved ones and the whole operation was intended to kill the Emperor anyway. The same would hold true for Anakin. He could have killed Mace Windu to save the Chancellor and Padme but that doesn't mean he's going to then go mad and kill all Jedis including children. It doesn't add up from a merely psychological point of view. He had a set of objectives and that made him want to keep the Chancellor alive (quite valid by the way, Mace Windu is quite clums...

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