Hindu Science

Traditions in Hinduism were considered mainly as superstitions, but with the advent of science, it is becoming evident that these traditions are based on some scientific knowledge and moved from generations to generations as traditions. Though the common people did not know science in it, they were following it very faithfully over the years. This article is an attempt to bring forward the science involved in these traditions and rituals. Ancient Rishis, which were scientists actually, did not tell the common people the science involved in these traditions, but instead related them with the God and religion, so that the common people would benefit from them.


Another contributing factor is that the Hindu traditions are made depending on the climate of India as Hinduism is the main religion in India. Even in India, there are different regions with different climate, so they vary from region to region.

1. Why every Hindu should have a Tulsi plant in front of his/her house?

Answer: The Latin name of Tulsi plant is ” Ocimum Sanctum.” It is also called as Holy Basil. For thousands of years, Tulsi has been worshiped by Hindus. It is considered as a sacred plant and it is necessary for every Hindu family to have a Tulsi plant in front of their house. The recent studies, have shown that Tulsi plant releases Ozone (O3) along with oxygen, which is very essential for ecological balance. World Ozone Day is celebrated on 16th September of every year, at which time some environmental organizations distribute Tulsi plants in large number.

Besides that Tulsi has lots of medicinal uses and is a very important herb according to Ayurveda. Tulsi leaves strengthen our immune system. So, the Tulsi leaves are mainly used for treating fever, common cold, cough, sore throat, and respiratory disorders.

Therefore, I think not only Hindus but all of us should have a Tulsi plant in front of our house.

2. Why Hindus worship some particular trees and not all the trees?

Answer: It is true that Hindus honor all the trees but some particular trees and plants are considered sacred and have been worshiped over thousands of years.

Some of the examples are Peepal Tree (Ficus religiosa) and Audumbar Tree (Ficus racemosa). These two trees are 24-hour oxygen generators and cannot be planted manually. They grow on their own mainly through the birds, which eat their fruits. Audumbar tree is associated with Guru Dattatreya, one of main Hindu deities and cutting or dishonoring the tree in any way is considered as a sin. Both of these trees are very important for ecological balance. So by associating them with Hindu deities, they have been protected, so that no one would cut them.

3. Why Hindus pierce ears of a baby?

Answer: After a baby is born, it is a general practice in Hindus to pierce his/her ears. Actually, it is a part of acupuncture treatment. Acupuncture and acupressure is not new to Hindus. Even it is said that these techniques originated in India and later they were conserved and modified by Chinese. Outer part of ears carry a lot of important acupuncture and acupressure points. The point where the ears of a baby are pierced is known for curing asthma. That is why even ancient Hindus used to wear earrings but now a days most Hindus do not wear earrings. They do not even pierce the ears after first piercing. The holes in their ears become invisible after as they grow up. Only Hindu female wear earrings as a tradition.

But there are males of some castes in Hinduism who wear earrings as a tradition till now.

4. Why Hindus do not eat meat on particular days?

Answer: Hindus do not eat meat on particular days, not limited but including:

Mondays, Thursdays, and Saturdays of every week, Sankashti Chaturthi, Angarki Chaturthi, Ekadashi, Gudhipadwa, Akshaytrutiya, Diwali (all the days) and many more auspicious days.

Amongst these, the reason for not eating meat on some particular days excluding weekly days is purely religious. Killing of animals is considered as a sin in Hinduism. So, people avoid eating meat at least on those auspicious days to maintain sacredness of that particular day.

The reason behind not eating meat on weekdays including Mondays, Thursdays, and Saturdays is that as a human being we need only a little amount of meat to fulfill requirements of our body such as iron, vitamin B12 and other vital nutrients. But human being basically is an animal and we get addicted to eating meat. As we all know eating excessive meat is not good for health. It can cause diseases like piles, kidney stones, colon cancer, blood pressure, heart attack, etc. Then also people cannot refrain themselves from eating flesh. Therefore, Hinduism has placed some restrictions by assigning the days to particular deities. E.g. Monday is dedicated to Lord Shiva, Thursday to Lord Dattatreya, and Saturday to Lord Hanuman. In this way, people have been assigned some religious restrictions and as most of Hindus are religious, they do obey this rule. In this way, they restrict the meat in their diet which is good for their health.

5. Why only some castes are allowed to eat non-vegetarian food and others are not?

Answer: Basically, who should eat and who should not depends on the occupation of a person. If you ask a modern doctor, he will simply tell you that if you have need for more calories and you do a lot of physical labor, then only you should eat nonvegetarian food. If your occupation is of sedentary type and you eat a lot of high-calorie food, you are bound to gain more weight and invite many sorts of diseases related to obesity.

The medieval caste system of India was based upon the occupation of a person. Therefore the people from a particular caste doing more physical labor were allowed to eat meat. For example, job of a Kshatriya was to fight with enemy and protect the people. So, they required a lot of energy. Hence, Kshatriyas were allowed to eat meat. In the same way, a farmer who requires a lot of physical work was allowed to eat meat. On the other hand, other castes like Brahmins who do Prayer and intelligent work requiring less hard labor were restricted from eating meat. In the same way, weavers, businessmen were not allowed to eat meat.

Aside from that, some nonvegetarian products like meat and chicken are hard to digest. If you do not have enough body movement, it will be hard for you to digest that food and you will be unnecessarily inviting the ailments.

6. We get the human body after our soul passes through 84,00,000 species.

Hindus believe we get a human body after our soul passes through 84,00,000 species. Initially, critics of Hinduism used to say that this is just a myth, so many species do not exist. But with the advent of science, it is revealed that there are about 84,00,000 species on the earth. So, the above statement is symbolic for the fact that human being is born through evolution and we human beings are the most advanced stage of evolution.

7. How Yogis float in the air?

You must have seen in some advertisements or in cartoon films based on Hindu mythologies that some Yogis possess the power of floating in the air while meditating. This can be explained with the phenomenon of superconductivity. This is a possible scientific explanation.

Superconductivity is a phenomenon in which the electrical resistance of certain materials becomes exactly zero, below a characteristic temperature, usually well below 0 degrees Celcius. For example, some cuprate-perovskite ceramic materials become superconductors at -183 degrees Celcius.

When the material becomes superconductor, magnetic lines do not pass through them and they float in the air. This can be easily demonstrated in the lab using liquid nitrogen and the superconductor material. The same principle applies to the body of the Yogi.

In Dnyaneshwari, written by Saint Dnyaneshwar, he has described his experience of what happens when Kundalini Shakti arises in the body. He has mentioned that it feels like Kundalini power drinks all the blood and eats up all the flesh in your body and your body becomes very, very cold. After some time, it again regenerates everything and your body becomes as fresh as a newborn.

It is quite possible that when the temperature of Yogi’s body decreases, it reaches to a point where Yogi’s body becomes a superconductor and hence, the gravitational lines do not pass through his body and he floats in the air. Though, there is no proof for this but it is quite possible.

Hence, it is not a superstition that Yogis float in the air. The ad makers who mock the Hindus in the ads by making fun out of the Yogis floating in the air should consider this fact.

8. Theory of atom was first put forth by Indian scientist Kanad.

We learn in our science text books that the everything in this universe is made up of atoms i.e. atom is the smallest parts of the matter and this theory was first put forth by Dalton. Hence, the theory is known as Dalton’s atomic theory. But this theory was first put forth by an Indian scientist Kanad before 500 B.C. It is not just a rumor but it is a proved fact. The evidence is there to prove this but still the credit goes to Dalton and not to Kanad.

19 thoughts on “Hindu Science

  1. Why do we name baby after 12 days of his/her birth and why the family where the baby is born do not lit diyas or worship for 10-11 days and on 12 th day sprinkle holy water?

    • During old days there were no hospitals. Birth used to take place at home. During worship dhoop, scented sticks, flowers are used. Camphor and ghee lamps are also used. Chanting of sholkas is part of worship. For a baby birth cause transition from very secured world (inside mother) to unsecured world. It takes around 10/12 days for the baby to get accustom to changes. During this period, strong smell / loud sounds can cause harmful to baby. Therefore worship inside house is not allowed during these days. While considering worship at temple, you will meet many people at temple which can bring infections inside house. Being at low immunity during initial days, baby can be infected. To avoid all this it is recommended not to worship during 10-11 days from birth of baby. On 12th day holy water is sprinkled which spreads mild but dominant and mainly pleasant smell which is good start for baby.

  2. I’m very impressed with these answers. Many people in India even most of the Hindus don’t know the real facts about the festivals and customs. Thus, I think this site will be helpful in knowing the culture and customs.

  3. it is very important to spread this precious information to current generation..as they are goin through wrng path and doing ther life more hard..without any satisfaction

    • It has been scientifically proven now that human mind can retain knowledge or any information for a very long time if some structure, picture or some bodily form is related to that information. When we worship idols we basically give our God a bodily form or a structure which enables our mind to connect with God in a better way. It has been now proved scientifically that worshipping God through idols is the best way of worshipping God. We sometimes misinterpret idols with polytheism in hinduism. Hinduism says that there is only one supreme diety ‘the Brahaman’ and we actually worship Braham in more than one form according to our convenience and belief.

    • MR.Shankey has already replied for your question. I have another logical answer(not scientific).
      We all need water to survive. All of us drink water is glass, right? According to science water is made of 2 atoms of hydrogen and 1 atom of oxygen. The same hydrogen and oxygen are present in the atmosphere also. Even water is present in the atmosphere in the form of water vapour, then why cant we drink water from air, when water is present there? In the same way God is omnipresent, but the devotee needs a temple and an idol to worship God. I feel there is nothing wrong in this. You think about this.
      Thank you brother

      • Even god is omnipresent one needs to go to temple not just for praying but its for his own benefit because hindu temples were built in place were positive powers gather together and place were the idol is placed is buried with copper plates in scientific researches says cu plates increases positive energy and reduces stress and water used for washing idol contains campor and tulasi and other herbs and vessel used for thertham increarse strength due reduction of metals in micro scales and bell rings (7 sec)produce clear mind and joining hands for workshiping activates 5 main parts in our body so only a hindu goes for temple once in a week

    • This is to protect the Aagya chakra where we normally put the bindi. In olden days they used kumkum made of turmeric saffron only. My Master insist that all should wear a Bindi to also protect from evil eyes. When somebody looks into our eyes the bindi attracts attention and the focus is changed.Jaya Guru Datta.

      • I believe, bindi/kumkum is put to keep aagya chakra under control. This chakra is found between your eyebrows and eyes. Aagya chara is fierce and brings out anger. So, by putting kumkum it’s effect is reduced. And helps you to be at peace.

  4. The answers given looks convincing. It should be spread among all young people who partly feel that all our ancient [ vaidik] practices were unscientific. I am member of ‘ Vaidi Vishwa’ sanstha founded by Yogiraj Shri Manohar Harkare about 50 years back. Yogiraj Manohar Harkare who was Science graduate & was freedom fighter & did Yog & Bhakti marg Sadhna for about 9 years at the bank of Vainganga River, Pavani near Nagpur under the guidance of Santh Shreshtha Shri Dyneshwar Maharaj [ Aalandi]. He strongly believes that Adhyatma is some thing needs to be understand only by experiance & which you get through proper Sadhana. He wrote number of books like Ramayan Rahasya, Vishwa aadarsha Gopal Krishna, Bhagvad Gita [ Science involved in it], Sarvadharmaswarup etc through which he constantly spread that the all the Veda stanza inner meaning needs to be understand which is full science & our Rushi – Munies were great scientist who got all these knowledge by Dhyan [ concentration] & they wrote in poem/stanzas format.
    You are requested to read all his books, I am sure it will help you to further elaborate the greatness of Hinduisam/Vaidik Culture.
    Subodh Deshpande

    • Generally when there is death in family, memebers of the family living together tend to carry harmful microbes emitted from the deceased person.
      On the other hand, temples are proxy healing centers with enormous positive energy which was designated as place of worship for hindus so that, everyone visits temple clean.
      If you consider above two statements, to avoid spreading of these disease factors, family members were not allowed into temple for 9/11 days.

    Atharva Veda 6.77.1 Firm stands the heaven, firm stands the earth, firm stands this universal world…
    The above two verses can also be translated as,
    ”the earth is standing still”
    Rig Veda 10.149.1 Savitar has fixed the earth with supports ; Savitar has fastened heaven in unsupported space…
    Nirukta 10.32 Savitar caused the earth to be fastened with supports. In the supportless atmosphere Savitar has made the heaven firm…
    Atharva Veda 13.1.6 …Rohita with his might hath established Earth and Heaven.
    Rig Veda 1.59.2 The forehead of the sky, earth’s centre, Agni became the messenger of earth and heaven.
    Rig Veda 1.115.5 In the sky’s lap the Sun this form assumeth that Varuna
    Yajur Veda 33.38 In the sky’s lap the Sun this form assumeth that Varuna and Mitra may behold it…
    Earth is supported by a Pillar
    Rig Veda 8.41.10 In his successive functions, he emits his bright rays (dur¬ing day) or turns them dark (during the night). He measures out the eternal abode, and supports with the pillar of the firmament, both heaven and the earth. May all our adver¬sities vanish” Tr. SatyaPrakash Saraswati
    Rig Veda 1.160.4 Among the skilful Gods most skilled is he, who made the two world-halves which bring prosperity to all;Who with great wisdom measured both the regions out, and stablished them with pillars that shall ne’er decay.
    Bull is holding up the Earth
    Atharva Veda 4.11.1 The Bull supports the wide-spread earth and heaven, the Bull supports the spacious air between them. The Bull supports the sky’s six spacious regions: the universal world hath he pervaded.
    Sun Rises from the sea
    Rig Veda 7.55.7, Atharva Veda 4.5.1 The Bull [Vushab/Sun] who hath a thousand horns, who rises up from out the sea…
    Atharva Veda 4.14.3 From earth’s high ridge to middle air I mounted, and from mid-air ascended up to heaven
    Atharva Veda 19.27.3-4 Three are the earths, they say, and three the heavens, three are the atmospheres. Three vaults of heaven, and three seas, three bright, three stationary ones
    [Maurice] Atharva Veda 6.8.3 As the sun day by day goes about this heaven and earth…
    [Griffith] Atharva Veda 6.8.3 As in his rapid course the Sun encompasses the heaven and the earth…
    यथा [Yatha] = As the, Like the.
    सूर्य [Surya] = Sun .
    एति [Yeti] = goes.
    परि [Pari] = around.
    घावा [Ghava] = Heaven.
    पृथ्वी [Puthvi] = Earth.
    [Griffith] Atharva Veda 6.12.1 As the Sun goes round the heaven, have travelled round the Serpents’ race…
    [Maurice] As the sun (goes around) the heavens I have surrounded the race of the serpents…
    Atharva Veda 6.44.3 Thou art the urine of Rudra, the navel of amrita (ambrosia)…
    मूत्र [Mutr] = Urine. Refer Panini’s Ashtadhyayi Vol III, Ch 2.56. V.S. Apte’s dictionary
    Rig Veda 1.50.8, 1.50.1 O, Bright sun, a chariot named harit with seven horses takes you to sky
    अश्व [Ashva] = Horse
    रथ [Rath] = Chariot
    सूर्य [Surya] = Sun
    सप्त [Sapt] = Seven
    Rig Veda 10.49.7 I travel round about borne onward in my might by the fleet-footed dappled Horses of the Sun.
    The Vedas also says the Sun hides
    Rig Veda 3.49.5 Where as a Friend with friendly men, Navagvas, with heroes, on his knees he sought the cattle.here, verily with ten Dasagvas Indra found the Sun lying hidden in the darkness.

  6. I can’t agree with you one thing. Hinduism always prefer vegetarian food. But nobody obey it. Only Bhramins follow vegetarian food.

    • This is not correct. The food habits are defined for the type of work you do. For bhramins (considered to be one related to teaching and science) whose majority time is spend sitting at one place, veg food is preferred. It is easy to digest and keep your anger low. For Kshtriyas (fighters) preferred to do hunting and eat meat, as they need more energy and anger. Also they should be used to see blood. People have carried forward only words but not the meaning and motive behind the words.

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