Apply In Person

1. To Request a Determination of Terrestrial Gravity (LabGrav or ON), the applicant has to approach the Laboratório de Gravimetria do ON — Observatório Nacional link
2. LabGrav (Laboratório de Gravimetria) is a laboratory at the Observatório Nacional (ON) in Brazil that specializes in gravimetry. Contact them directly to inquire about the determination of terrestrial gravity.
3. Clearly explain the details of your project or study that require the determination of terrestrial gravity. Describe the scope, objectives, and how the gravity data will be used in your research or project.
4. The applicant has to visit the office with the request letter.
5. An application form will be provided to the applicant by the concerned officer.
6. The applicant has to fill in all the necessary details in the application form. (Incomplete applications are not accepted)
7. Ensure that the applicant has attached all the necessary documents mentioned in the “Required Documents” section of this page.
8. The applicant has to attach the photocopies of the required documents along with the application form while submitting.
9. Submit all the documents with the completed form to the concerned officer.
10. The applicant has to pay the prescribed fee as requested by the authority.
11. Then the application will be processed further.
12. Once the process gets completed, the applicant gets a call from the office regarding the application.
13. For further process, the applicant has to follow the instruction given by the officer.
14. This entire process can be completed within 30 days or as per the timeline advised by the respective department authority.

• Application form
• Request letter
• ID proof (Birth Certificate, national Identity card, etc)
• Project description
• Institutional Affiliation or Collaboration
• Data Management Plan
• Ethical Considerations
• Any other documents (if required)

Laboratório de Gravimetria do ON — Observatório Nacional
Headquarters Address: Rua General José Cristino, 77,
Bairro São Cristóvão, Rio de Janeiro-RJ. CEP 20921-400
TELEPHONE - +55 21 3504-9100
Email - comunicacao@on.br
Contact link

• Any researcher or scientist who intends to Request a Determination of Terrestrial Gravity (LabGrav or ON) is eligible to make this application.

• The applicant has to pay the prescribed fee as requested by the authority.

Explain the time until which the certificate/document is valid.
e.g. Birth Certificate Valid Forever

Please attach documents that people can use. e.g. links

Please attach sample completed documents that would help other people.

• This entire process can be completed within 30 days or as per the timeline advised by the respective department authority.

Videos explaining the procedure or to fill the applications.
Attach videos using the following tag <&video type='website'>video ID|width|height<&/video&> from external websites.
Please remove the '&' inside the tags during implementation.
Website = allocine, blip, dailymotion, facebook, gametrailers, googlevideo, html5, metacafe, myspace, revver,
sevenload, viddler, vimeo, youku, youtube
width = 560, height = 340, Video ID = Can be obtained from the URL of webpage where the video is displayed.
e.g In the following url 'http://www.youtube.com/watch?v=Y0US7oR_t3M' Video ID is 'Y0US7oR_t3M'.

• Applicants must complete the application form before submitting it. Incomplete applications will not be accepted.
• Applicants must provide genuine information while applying for this procedure.

• Name of the applicant
• Address of the applicant
• Age
• Plan
• Email ID
• Mobile number
• Fax
• Mailing address
• Nationality
• Declaration
• Date
• Signature

• The determination of terrestrial gravity through LabGrav or ON (Observatório Nacional) in Brazil refers to the process of measuring and calculating the gravitational field of the Earth at specific locations on its surface.
• This scientific procedure involves using specialized equipment and techniques to obtain precise measurements of gravity, which are crucial for various research fields, including geophysics, geodesy, geology, and other related disciplines.

The determination of terrestrial gravity is important for several applications, including:

• Geodesy: Geodesy is the study of the shape and size of the Earth. The determination of terrestrial gravity is used to calculate the geoid, which is the theoretical surface of equal gravity.
• Mining: The determination of terrestrial gravity is used to locate mineral deposits. The density of a mineral deposit is different from the density of the surrounding rock, so the determination of terrestrial gravity can be used to identify areas where mineral deposits may be present.
• Engineering: The determination of terrestrial gravity is used to design and construct structures. The acceleration due to gravity is used to calculate the forces acting on a structure, such as the weight of the structure and the forces caused by wind and earthquakes.

Please explain what are other uses for obtaining this document/certificate.

e.g. Birth Certificate can be used as proof of identity.

Place some external links which might help.

More information might help people.