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What is yojana?


ChatGPT said:
🧭 What is a Yojana?
A yojana is an ancient Indian unit of distance found in many classical Sanskrit texts, including religious scriptures, epics, and astronomical treatises.

📏 General Definition:
A yojana is traditionally defined as the distance a person could travel in one day — usually by foot or by chariot — under average conditions. However, its exact length has varied across sources and time periods.

🔢 Approximate Modern Conversions:
Source / Tradition    Approximate Value of 1 Yojana
Aryabhata    ~8 miles (~12.8 km)
Surya Siddhanta    ~5 miles (~8 km)
Vishnu Purana / Ramayana    8–9 miles (~13–14.5 km)
Common scholarly average    8 miles / 12.8 km

🧱 Subdivisions of a Yojana (from ancient Indian units):
1 yojana = 4 krośa (roughly "league")
1 krośa = 2000 dhanus
1 dhanu = 4 hastas (cubits)
1 hasta = 24 angulas (finger widths)

⚠️ These units themselves varied depending on time, region, and context — so total conversions can differ.

📚 Where is Yojana used?
Religious Texts: Ramayana, Mahabharata, Puranas (e.g., Hanuman jumping 100 yojanas to Lanka).

Astronomy: Surya Siddhanta, Aryabhatiya, etc. (for planetary distances and orbital models).

Mythology & Cosmology: Describing distances between heavenly bodies, mythical cities, or realms.

🧘 Meaning and Function:
The yojana was not just a unit of measurement — it symbolized great distances, expanses, or cosmic scales. In mythology, it often conveys magnitude rather than scientific precision.

Summary:
Yojana = ancient Indian unit of distance

Common modern approximation: 8 miles or 12.8 km

Used in mythology, astronomy, scripture

Not a fixed unit — varies by source

Posted
13 hours ago, Raisins_72 said:

Few more from ChatGpt 😃 @rational

 

Vedic Knowledge vs Modern Science – Key Parallels

 

1. Speed of Light

 

  • Vedic Source: Sayana’s commentary on Rigveda 1.50.4
  • Verse: “Yojanānam sahasre dve dve śate dve ca yojane,
    ekaena nimishardhena kramamāṇa”
  • Calculation: ≈ 186,000 miles/sec
  • Modern Match: Speed of light = 186,282 miles/sec

 

 

Lets first look into this verse

Rigveda 1.50.4

Source: 1

Sanskrit text [Accents, Plain, Transliterated]:

त॒रणि॑र्वि॒श्वद॑र्शतो ज्योति॒ष्कृद॑सि सूर्य । विश्व॒मा भा॑सि रोच॒नम् ॥
तरणिर्विश्वदर्शतो ज्योतिष्कृदसि सूर्य । विश्वमा भासि रोचनम् ॥
taraṇir viśvadarśato jyotiṣkṛd asi sūrya | viśvam ā bhāsi rocanam ||

https://www.wisdomlib.org/hinduism/book/rig-veda-english-translation/d/doc829504.html

Source 2

Sanskrit to hindi

तरणिर्विश्वदर्शतो ज्योतिष्कृदसि सूर्य । विश्वमा भासि रोचनम् ।।४ ।।
 

https://ia601608.us.archive.org/5/items/RigvedInHindi/Rigved.pdf

Source 3

Same verse as source 1 and 2 cant  post the verse  here

https://vedicheritage.gov.in/samhitas/rigveda/shakala-samhita/rigveda-shakala-samhitas-mandal-01-sukta-050/

Source 4

telugu version of the sloka

తరణిర్విశ్వదృష్టతోజ్యోతిష్యా-వేదసిసూర్య।విశ్వమాభావిలోచనమ్।।

https://archive.org/details/samulasrimadandh015268mbp

Asaulu nuvvu post chesina verse :“Yojanānam sahasre dve dve śate dve ca yojane,
ekaena nimishardhena kramamāṇa”
 ki rigveda lo unna 1.50.4 verse "araṇir viśvadarśato jyotiṣkṛd asi sūrya | viśvam ā bhāsi rocanam ||" ki emanna sambandam undha? 

Nuvvu cheppina verse  e mandalam, ee sukthi, ee verse ani cheppu and also source plz.

 

Posted
5 hours ago, rational said:

Ahh! i will definitely look into it. plz let me know when the vedas are written.

The Vedas were not written down for centuries. They were preserved through an oral tradition using precise memorization techniques. Scholars believe the Vedas were first committed to writing around 500 BCE or later, possibly during the Mauryan period, when writing systems like Brahmi script became more widespread.

Posted
2 minutes ago, rational said:

Lets first look into this verse

Rigveda 1.50.4

Source: 1

Sanskrit text [Accents, Plain, Transliterated]:

त॒रणि॑र्वि॒श्वद॑र्शतो ज्योति॒ष्कृद॑सि सूर्य । विश्व॒मा भा॑सि रोच॒नम् ॥
तरणिर्विश्वदर्शतो ज्योतिष्कृदसि सूर्य । विश्वमा भासि रोचनम् ॥
taraṇir viśvadarśato jyotiṣkṛd asi sūrya | viśvam ā bhāsi rocanam ||

https://www.wisdomlib.org/hinduism/book/rig-veda-english-translation/d/doc829504.html

Source 2

Sanskrit to hindi

तरणिर्विश्वदर्शतो ज्योतिष्कृदसि सूर्य । विश्वमा भासि रोचनम् ।।४ ।।
 

https://ia601608.us.archive.org/5/items/RigvedInHindi/Rigved.pdf

Source 3

Same verse as source 1 and 2 cant  post the verse  here

https://vedicheritage.gov.in/samhitas/rigveda/shakala-samhita/rigveda-shakala-samhitas-mandal-01-sukta-050/

Source 4

telugu version of the sloka

తరణిర్విశ్వదృష్టతోజ్యోతిష్యా-వేదసిసూర్య।విశ్వమాభావిలోచనమ్।।

https://archive.org/details/samulasrimadandh015268mbp

Asaulu nuvvu post chesina verse :“Yojanānam sahasre dve dve śate dve ca yojane,
ekaena nimishardhena kramamāṇa”
 ki rigveda lo unna 1.50.4 verse "araṇir viśvadarśato jyotiṣkṛd asi sūrya | viśvam ā bhāsi rocanam ||" ki emanna sambandam undha? 

Nuvvu cheppina verse  e mandalam, ee sukthi, ee verse ani cheppu and also source plz.

 

ChatGPT lo idhi search cheyi:

Vedic Knowledge vs Modern Science – Key Parallels

Posted
12 minutes ago, Raisins_72 said:

I have seen this video on what basis did he decided that it belongs to Sanskrit?? it could be any language? did he cross check with other languages? He did not say anything about these. on what logic he assigned indus letter to sanskrit letter. there is no evidence to support this claims. 

 

Posted
12 minutes ago, Raisins_72 said:

ChatGPT lo idhi search cheyi:

Vedic Knowledge vs Modern Science – Key Parallels

Nenu direct gaa book sources isthunna with hindi and telugu of the verse 1:50:4. poni aa verse ni chatgpt lo type chesi choodu rig veda lo ee verse ani choopistundho??

Posted
Yojanānam sahasre dve dve śate dve ca yojane, ekaena nimishardhena kramamāṇa
ChatGPT said:

The verse you’ve quoted:

Yojanānam sahasre dve dve śate dve ca yojane,
ekaena nimishārdhena kramamāṇaḥ

is a Sanskrit shloka (often cited in discussions about the speed of light in ancient Indian texts). While it is not found in the Rigveda, it is often attributed to later texts, possibly the Purāṇas or commentaries from post-Vedic astronomy, though the exact source is uncertain and debated among scholars.


Transliteration:

yojanānāṁ sahasre dve dve śate dve ca yojane
ekena nimiṣārdhena kramamāṇaḥ


Translation:

"He (the Sun or light) traverses 2,202 yojanas in half a nimesha."


Interpretation:

This verse is sometimes interpreted by traditional commentators to describe the speed of light. Here's how it breaks down:

  • 1 yojana ≈ ~9 miles (though varies from ~8–9 miles or ~13–15 km depending on the source).

  • 1 nimiṣa ≈ 16/75 seconds (i.e., ~0.213 seconds), so half a nimiṣa ≈ 0.1067 seconds.

  • 2,202 yojanas ≈ ~19,818 miles (if 1 yojana ≈ 9 miles).

Calculated speed:

Speed=19,818 miles0.1067 sec≈186,000 miles/sec\text{Speed} = \frac{19,818 \text{ miles}}{0.1067 \text{ sec}} \approx 186,000 \text{ miles/sec}Speed=0.1067 sec19,818 miles186,000 miles/sec

Which remarkably matches the modern value for the speed of light (~186,282 miles/sec).


Caution on Interpretation:

  • This verse is not found in the Rig Veda or any of the four Vedas.

  • It is more likely to be from later astronomical or mythological texts, possibly a Purāṇic or Jyotiṣa work.

  • Scholars debate the authenticity of the claim that ancient Indians knew the speed of light in modern scientific terms.

  • It may be coincidental, symbolic, or allegorical, rather than a literal scientific measurement.

Posted

Yojanānam sahasre dve dve śate dve ca yojane,
ekaena nimishardhena kramamāṇa
This is a famous verse from Valmiki Ramayana (Yuddha Kanda 4.48) describing the incredible speed of Hanuman as he leaps across the ocean to Lanka.

Sanskrit Verse:
योजनानां सहस्रे द्वे द्वे शते द्वे च योजने।
एकेन निमिषार्धेन क्रममाण नमोऽस्तु ते॥

Transliteration:
Yojanānāṃ sahasre dve dve śate dve ca yojane,
Ekena nimiṣārdhena kramamāṇa namo’stu te.

Translation:
"You (Hanuman) crossed two thousand yojanas, plus two hundred, and another two yojanas (a total of 2,202 yojanas) in half a nimisha (a blink of an eye). Salutations to you!"

Breakdown & Meaning:
Distance Covered:

2,000 yojanas + 200 yojanas + 2 yojanas = 2,202 yojanas

1 Yojana ≈ 8–13 km (traditional estimates vary).

Total distance ≈ 17,616 km to 28,626 km (depending on yojana conversion).

Time Taken:

½ Nimisha (half a blink of an eye).

1 Nimisha ≈ 16/75 seconds (≈0.213 sec) (as per ancient time units).

½ Nimisha ≈ 0.1065 seconds.

Implications:

This describes Hanuman's supernatural speed while flying to Lanka.

If we take 1 yojana = 13 km, his speed would be ~2,202 × 13 km / 0.1065 sec ≈ 2.69 × 10⁸ m/s, which is close to the speed of light (3 × 10⁸ m/s)!

Scientific & Philosophical Interpretations:
Some scholars suggest this hints at ancient knowledge of relativistic speeds or divine powers (siddhis).

Others see it as poetic exaggeration to emphasize Hanuman’s divine mission.

This doesnt even belong to rigveda,  its describing speed of of hanuman has nothing to do with speed of light.

Posted
32 minutes ago, rational said:

I have seen this video on what basis did he decided that it belongs to Sanskrit?? it could be any language? did he cross check with other languages? He did not say anything about these. on what logic he assigned indus letter to sanskrit letter. there is no evidence to support this claims. 

 

Yes Anna, lot many scientists tried to decode it but no one is unable to match with any current language. In short, they assigned a code to each letter and ran through some Panini algorithm which formulated the sentences in the end and those sentences are matching to existing slokas in Vedas. 

Posted
4 minutes ago, Raisins_72 said:

Yes Anna, lot many scientists tried to decode it but no one is unable to match with any current language. In short, they assigned a code to each letter and ran through some Panini algorithm which formulated the sentences in the end and those sentences are matching to existing slokas in Vedas. 

I will do more research then post my findings. what do say about the sun and earth distance? which was our main topic? did u see the chatgpt version i posted?

Posted
32 minutes ago, rational said:

Nenu direct gaa book sources isthunna with hindi and telugu of the verse 1:50:4. poni aa verse ni chatgpt lo type chesi choodu rig veda lo ee verse ani choopistundho??

 

  • Sayana was a 14th-century scholar, and his commentary is based on even older traditions.

He may be using a different version of Rigveda at his time while you are referring the current one. Just fyi, there are different versions/types of Rigveda, but only one fully preserved recension of the Rigveda as of today. 

 

Posted
5 minutes ago, rational said:

I will do more research then post my findings. what do say about the sun and earth distance? which was our main topic? did u see the chatgpt version i posted?

I did anna - i will still stick on this before ruling it out completely.

17 hours ago, Raisins_72 said:

You are referring to our current formulas vs different formula(?) in the ancient times ! 
 

The fact is modern science calculation & ancient calculation are pretty close, not only this one but also “pi” & many others. The methods could be different, but we cannot compare apples to apples ! 

 

Posted
1 minute ago, Raisins_72 said:

 

  • Sayana was a 14th-century scholar, and his commentary is based on even older traditions.

He may be using a different version of Rigveda at his time while you are referring the current one. Just fyi, there are different versions/types of Rigveda, but only one fully preserved recension of the Rigveda as of today. 

 

poni nuvve post cheyyi search chesi what is 1:50:4 verse according the one fully preserved recension of rigveda. aa sloka ee sloka match avthundi emo choodam.

Posted
4 minutes ago, Raisins_72 said:

I did anna - i will still stick on this before ruling it out completely.

 

The formulas for calculating distance doesnt change based on present or ancient times. Its the misrepresentation of the units that will make the calculation wrong.

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