Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

surface area

20 views
Skip to first unread message

litto

unread,
Aug 8, 2003, 9:34:50 AM8/8/03
to
how do i find the surface area of a dome?
i've tried list, area and massprop commands but yielded no result.


Paul Turvill

unread,
Aug 8, 2003, 11:12:52 AM8/8/03
to
What kind of dome? Solid model? Surface? Wireframe? ??
___

"litto" <mear...@yahoo.com> wrote in message
news:6BE1F1997F4AC594...@in.WebX.maYIadrTaRb...

jochen

unread,
Aug 8, 2003, 2:51:33 PM8/8/03
to
There exist exactly math formulas for spheres.
Try them
Good luck
Jochen

www.black-cad.de

"litto" <mear...@yahoo.com> schrieb im Newsbeitrag
news:6BE1F1997F4AC594...@in.WebX.maYIadrTaRb...

TCEBob

unread,
Aug 8, 2003, 5:30:07 PM8/8/03
to
litto wrote:
> how do i find the surface area of a dome?
> i've tried list, area and massprop commands but yielded no result.

2*pi*r*h; r is radius of the sphere, h is height of the dome.
http://mathforum.org/dr.math/faq/formulas/faq.sphere.html

rs


litto

unread,
Aug 8, 2003, 6:48:26 PM8/8/03
to
thanks for your reply. forgot to mention about the dome profile which is
irregular (series of arcs).
first i made a region and revolved it and came up with a solid dome. how do
i find the surface area without using mathematical formulas?

"Paul Turvill" <nos...@turvill.com> wrote in message
news:26FA5DA94F28FEA5...@in.WebX.maYIadrTaRb...

Paul Turvill

unread,
Aug 8, 2003, 9:33:26 PM8/8/03
to
How about the AREA command? It will return the entire surface area of your
solid, so if your dome has a flat bottom, you can subtract the area of the
circle(?) that constitutes its base; what's left will be the area of the
dome.
___

"litto" <mear...@yahoo.com> wrote in message

news:3ED05B1E841F36CB...@in.WebX.maYIadrTaRb...

Lito

unread,
Aug 8, 2003, 10:00:52 PM8/8/03
to
paul,

yes, that's what i had in mind. thanks for the re-assurance.

"Paul Turvill" <nos...@turvill.com> wrote in message

news:E5BD7DE78B6ACCC3...@in.WebX.maYIadrTaRb...

hao.an...@gmail.com

unread,
Dec 30, 2012, 9:48:05 PM12/30/12
to
在 2003年8月8日星期五UTC+8下午9时38分56秒,litto写道:
> how do i find the surface area of a dome?
> i've tried list, area and massprop commands but yielded no result.

=======================================================================================
Gold APP Instruments, expert in surface area and porosimetry analyzer, is a high technology and originality corporation located in Zhongguancun, Beijing High-tech Industry Zone, where gathered numerous national famous universities and research laboratories. Corporation originates and serves the China weapons system, relies on advantages of local talented human resource and weapons system technology and devotes into scientific instruments’ development, production and sale. With closely cooperation with weapons system and reference from overseas developed technology, Gold APP had built a well-known brand in weapons and civil industries. To research and develop fully-auto and intelligent analytical laboratory instruments, provide international standard, high cost performance and state-of-the-art instruments for R&D institutions and manufacturing enterprises are our unchanged mission.

Gold APP analyzers cover F-Sorb X400 series based on dynamic nitrogen adsorption and V-Sorb X800 series rely on static volumetric nitrogen adsorption for surface area and pore size analysis. Further, an extremely sophisticated high pressure gas sorption H-Sorb 2600 and the revolutionary true density analyzer G-DenPyc 2900 left other components far behind. Gold APP’s scientists have revolutionized measurement techniques and designed instrumentation to enable the accurate, precise, and reliable characterization of powdered and porous materials: battery and fuel cell materials, heterogeneous catalysts, pharmaceuticals, ceramics, carbons, zeolites, projectile propellant, cosmetics, aerospace, nanotubes, medical implants, pigments and foodstuffs, indeed any solid whose performance depends on some interaction with its surroundings through its surface.

All series of instruments had approved by ISO9001, national calibration certificate etc. these make it hold the biggest market share in China from year of 2008. The driving force of our corporation is to research and provide top performance, competitive price instruments of unmatched precision and utility. Additionally, Gold APP had built a high reputation with domestic and international users because of the high quality products and excellent customer services.



Currently, dealers, distributors, agents, wholesalers are recruiting. If you interest or deem your country has a big and unexplored market, pls. let us know. Thanks!

For more details, pls. contact us:
Web: www.jinaipu.com
Email: sa...@app-one.com.cn
Tel.: 86-10-82133318 #810
Mobile: 86-18210009838
MSN: gol...@msn.com
Skype: Gold-APP-Instruments

0 new messages