What does PS mean in time?

A picosecond (abbreviated as ps) is a unit of time in the International System of Units (SI) equal to 10⁻¹² or 1⁄1 000 000 000 000 (one trillionth) of a second. That is one trillionth, or one millionth of one millionth of a second, or 0.000 000 000 001 seconds.

When to use PS.?

PS stands for postscript. It comes from the Latin postscriptum, which literally means “written after.” A postscript is an additional thought added to letters (and sometimes other documents) that comes after it has been completed.

What's faster than a picosecond?

One femtosecond — a quadrillionth, or million billionth, of a second — is a thousand times shorter than the picosecond snippets of time in which molecules react.

What does PS mean in text message?

PS means “postscript” and is a way to include an additional thought at the end of written communication.

What is the speed of light in a picosecond?

Hence, the speed of light in meters per picosecond is 3 × 10^-4 m/pico second.

What does P.S. mean?

How far does light travel in a PS?

In fact light travels at a fast but finite speed of 299 792 458 meters per second.

How fast is 1 light hour?

What about light hours? How fast can light travel in an hour? To calculate how fast light can travel in an hour multiply the distance light can travel in a minute by 60 since there is 60 minutes in an hour. So light travels 1,080,000,000 kilometers or 669,600,000 miles in one hour!

Do people still use PS?

PS is an abbreviation of the Latin term postscriptum, which translates to written after. Both PS or P.S. are correct. The postscript dates back to an age when letters were handwritten or typed out on a typewriter. PS still appears in modern correspondence like emails, and online chats.

How do you use PS in text examples?

An example of the different ways you can punctuate PS:

PS Don't forget to read the book I sent you and tell me what you think about it. P.S. Don't forget to read the book I sent you and tell me what you think about it. PS: Don't forget to read the book I sent you and tell me what you think about it.

Is it PS or PPS?

PPS stands for post postscript. It is used for a second postscript at the bottom of a letter. The report says that the commonly used abbreviation PSS is an error. Writers should use PPS.

What is the smallest unit of time?

Hence, second is the smallest fundamental unit of time.

What is the quickest unit of time?

What is a zeptosecond? A zeptosecond is a trillionth of a billionth of a second. That's a decimal point followed by 20 zeroes and a 1, and it looks like this: 0.000 000 000 000 000 000 001. The only unit of time shorter than a zeptosecond is a yoctosecond, and Planck time.

Which is the shortest length of time?

Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen molecule. That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a billionth of a second, or a decimal point followed by 20 zeroes and a 1.

What does PS mean in school?

PS stands for Primary School.

What is the meaning of PS in English?

What Is the Meaning of PS? PS means postscript, which is derived from the Latin word, Postscriptum. The word postscript means “written after”. The term postscript or the abbreviation PS is written when an additional message or information is added after the script of the letter or email is written.

What is PS used?

What does PS mean? PS, which is an abbreviation for "postscript," derives from the Latin word "postscriptum," meaning written after or an afterthought. People more frequently used PS when handwritten letters were the most popular form of written communication.

What is the best way to write PS?

Merriam-Webster, the Chicago Manual of Style and the Purdue University Online Writing Lab (OWL) say the correct format is PS, capitalized and without periods. The Cambridge Dictionary recommends PS as the British spelling and P.S. as the American one.

When did PS become a thing?

The PlayStation was released in Japan in December 1994, and it made its American debut in September 1995; both releases elicited critical acclaim and impressive sales. Titles such as Twisted Metal and Ridge Racer were very popular. By 2005 the PlayStation had become the first console ever to ship 100 million units.

When did people start using PS?

"P.S." is centuries old. In a 1778 letter sent from West Point, N.Y., George Washington used it for emphasis. He punctuated the letter with a postscript that began, "P.S. Do not delay a moment in sending for the money."

What is the most popular PS?

Sony's PlayStation 2 is the best-selling game system overall with over 155 million units worldwide.

How many years is 1 light year?

For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!

How far is 1 light year?

Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.

How many mph is light travel?

Constant Speed

So what does this sentence really mean? Surprisingly, the answer has nothing to do with the actual speed of light, which is 300,000 kilometers per second (186,000 miles per second) through the "vacuum" of empty space.