What is a KA?

Jul 25, 2012 29 Replies

Just got in an obviously super expensive precision step reference. A Veeco 138-369.



The step height is 9.315 KA. Not the sort of thing you would trip over.



What is a KA compared to, say, a micrometer?


-- Many thanks,



Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss:

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kilo angstrom maybe?

-Lasse

I'd hazard a guess that KA is kilo-angstrom, where 1 angstrom = 1e-10 meters

So 1 KA would be 1e3 x 1e-10 = 1e-7 meters or 0.1 micron

Not so small when you realize we're now making 0.04 micron feature-size CMOS. ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

Assuming its a linear measure, as used in wavelength measurement, its probably a kilo Angstrom.

1 A = 1e-10 m 1 kA = 1e-7 m = 0.1 microns
Regards, Adrian Jansen adrianjansen at internode dot on dot net Note reply address is invalid, convert address above to machine form.

Kilo-angstrom, i.e. 0.1 um.

Cheers

Phil Hobbs

Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net

In which case, it should be written "kA".

"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)

Capitalized, Isn't it "Kick-Ass" ?:-) ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

Nah, that's like having an EU quality control spec for mercury-lead alloy dental fillings. Not that the SI police aren't just as mean as the ROHS ones, it's just that they can't put people in gulags. ;(

Cheers

Phil Hobbs

Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net

Yet.

"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)

I use "K" on schematics instead of "k" for readability. I get a ration of #$%& here every time I post one :-) ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

Got to admit I never noticed ;-)

"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)

Only the non-doers complain... typical in our present societal collapse. ...Jim Thompson

-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

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| 1962 | I love to cook with wine. Sometimes I even put it in the food.

Over here they have a Ford KA. Its very small indeed.

Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------

I thought it was a Ford Ka Ka ;-) ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

I thought the Kuga would be some kind of lady who likes younger guys, but it's actually quite a nice wee SUV (despite the electronics crapping out on me).

For some reason, "compose O A" doesn't work here, although dumpkeys says it should.

"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." (Richard Feynman)

Found On Road Dead Ka Ka?

The non-doers are called customers or users. They have a right to complain if they can't decode your parts values.

Ready to switch to 1K2 ohms instead of 1,200 ohms or 1.2K ohms?

Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

I assume you mean "1K2" instead of "1200" (who uses that nomenclature?) or "1.2K".

No, but I have switched from squiggly lines to rectangles. Don't like 'em (but they are easier to draw with PDF editing programs ;-).

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