அறிவியல்

BIPM IUPAC NCBI

இயற்பியல்

Android apps: PDG Booklet

NIST
https://www.nist.gov/
https://www.nist.gov/si-redefinition/meet-constants
https://physics.nist.gov/cuu/Constants/index.html

BIPM
International Bureau of Weights and Measures
https://www.bipm.org/en/

The International System of Units (SI)
https://www.bipm.org/en/measurement-units

Particle Data Group
https://pdg.lbl.gov/

HEPData
Repository for publication-related High-Energy Physics data
https://www.hepdata.net/

வேதியியல்

Android apps: Merck PTE, Isotope Browser

IUPAC
https://iupac.org/

Royal Society of Chemistry
https://www.rsc.org/journals-books-databases/open-access-publishing/

Periodic Videos,
The University of Nottingham
http://www.periodicvideos.com/

Commission on Isotopic Abundances and Atomic Weights
https://www.ciaaw.org/

Isotopes Matter
https://www.isotopesmatter.com/

Applet Name: IUPAC Periodic Table of the Elements and Isotopes (Interactive Electronic Version)
https://applets.kcvs.ca/IPTEI/IPTEI.html

International Atomic Energy Agency - Nuclear Data Section.
https://www-nds.iaea.org/

The NIST Chemistry WebBook
https://webbook.nist.gov/chemistry/

PubChem
freely accessible chemical information
https://pubchem.ncbi.nlm.nih.gov/

உயிரியல்

Android apps: [Wikipedia]

iBiology
Free Biology Lecture Videos
https://www.ibiology.org/

National Center for Biotechnology Information
https://www.ncbi.nlm.nih.gov/

The Gene Ontology (GO) knowledgebase
https://geneontology.org/

The Human Protein Atlas
https://www.proteinatlas.org/

The Worldwide PDB (wwPDB)
https://www.wwpdb.org/

RCSB PDB: A Living Digital Data Resource https://www.rcsb.org/

The Nucleic Acid Knowledgebase (NAKB)
https://nakb.org/

International Nonproprietary Names Programme and Classification of Medical Products
https://www.who.int/teams/health-product-and-policy-standards/inn