What does "t minus" mean?

Question

Additionally, what is the difference between "t minus and counting" and "t minus and holding"?

Answer 1

takeoff minus

Holding means the clock is not moving closer due to a technical problem

Answer 2

T Minus

Answer 3

T Minus Countdown

Answer 4

Also, T-minus blah and holding doesn't mean there is a problem. Most launches have a number of built-in hold periods of a variety of lengths. The shuttle launch has a handful of hold periods on launch days, some lasting hours. These holds allow things to be done to make sure everything is in synch with the launch. For a shuttle launch trying to attain a particular orbit (such as going to the ISS), the holds will be positioned so that the shuttle will launch at the right time to intercept that orbit.

Answer 5

This is jargon adopted by the space community. When launching a rocket there is a count down from some start time to zero. This then is a negative or minus time. The mission elapsed time (MET) starts at lift-off and increases over the course of the mission. SO teh count down is really in MET, hence the minus. If there is a problem, and they want to fix it without scrubbing the launch, they will stop the countdown. Now lots of things go on based on teh time to launch - it's all carefully scheduled. So rather than re-start fro the beginning they "hold" the clock from counting at the time they decide to stop launch activities. When they continue, the countdown picks up from the hold time.

Answer 6

T refers to starting TIME of a flight or project or insertion

T minus refers to the period that comes BEFORE that begins

HOLDING means we are delaying the START

It applies, primarily, to a rocket flight, but it can also apply to the test of something.

T minus refers to what leads up to "pushing the button to make it happen"

T plus is what happens AFTER you push the button.

Science and rocketry doesn't work in REAL TIME

There is a schuedule and things have to occur at T MINUS POINTS.

For example in a space flight at a specific T-MINUS point the cables connecting ground power to the ship have to drop away.

This is usually at T-minus 7 to 10

At some point the fule pumps must be started

This is usually at T-minus 7.

At some point the ignition sequence must start

This is usually T-minus 3

The EVENT doesn't start until the locks on the rocket are released at 0 (zero)

At that point the flight starts and the clock goes forward, T plus.

This too has a schedule. The rockest must separate at a given T plus mark.

Answer 7

What a wonderful question. Religion is, of course, the form that one's worship takes. Thus there are thousands of forms. Religion includes a system of religious beliefs and practices. The object of the religion may be false gods or the true God. Hence, there is false religion and there is true. Religion can get very fancy or remain simple. In the former case, such as it is today. In the latter case, such as it was in the Garden of Eden. What then is worship to me? How do I worship? To worship means to obey. And to obey means to worship. The two are intimately connected; indeed, they are coterminous and cannot be separated. Specifically, to obey the Sovereign Lord God Jehovah of Armies is to worship Him. I do my imperfect best in this regard. I fall on my face and get back up to try and try again. In the Garden of Eden, so long as they obeyed Jehovah, Adam and Eve were worshiping him. No temple, no Mosaic Law, no meetings. Simply leave the tree of the knowledge of good and bad alone. Simple. The minute they disobeyed, they stopped worshiping Jehovah. Same with the nation of Israel. The minute they attempted to practice a syncretistic religion they stopped worshiping Jehovah. The minute they made the golden calf, they stopped. And on and on. To worship is to obey. To obey is to worship. Hannah J Paul

Answer 8

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To me, worship is putting something or someone first in your life. That is the reason people can worship their job, their money, their family, their "belly", etc. And that is reason people can give worship to those other than Jehovah. But when Jehovah is first is your life, it is to him that you pray, that you sing about, that you speak about, that you read about, that you live for, that you long for, that you look forward to listening to and about, that you seek the approval of, that you study about, that you teach about, that you reach out to. He is your other half in a spiritual relationship. And spirituality cannot be complete without that other half. The definition of worship is multi-faceted, as are the expressions of worship. We speak of "worshiping in many ways". And that is correct. I don't mean all forms of worship are acceptable. But that our worship takes on different facets or expressions. We can't sing and study at the same time. But both are worship. We can't study and pray at the same time. But both are worship. There is more, but I will stop here.

Answer 9

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RE:
What does "t minus" mean?
Additionally, what is the difference between "t minus <time> and counting" and "t minus <time> and holding"?

Answer 10

Take off minus amount of time until. Never heard holding in this context.