From Spring

Back to Tracing the Sycamores


The three sycamores on a thick overcast April 17 day….

Next to the mailbox

Second 20 feet

Third right at the corner


Sycamore One: Next to the mailbox
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The Secone One: 20 feet from the first
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Second
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Second: peeling bark
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The Third
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The third: peeling bark
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Johnson Park in April

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  1. Section 0: The bench on the parking lot in front of  the deer area
  2. Section 1: Pictures from the Andrew Doktor bench on the leftmost side of the deck
  3. Section 2: Pictures from the middle of the deck, across from the Lamp Post
  4. Section 3: Pictures from the Bench
  5. Section 4: Pictures from the sign “Authorized Vehicle Only”

Section 0: The bench on the parking lot in front of  the deer area

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Picture 1. On the bench right in front of deer area close to road

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Picture 2: The treetops from the bench over the wire fence.

Walk across the road to the left end of the deck. The Andrew Doctor bench.


Section 1: Pictures from the Andrew Doktor bench on the leftmost side of the deck
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Picture 3. The Andrew Doctor bench above.
IMG_9975Picture 4. From the  Andrew Doctor bench
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Picture 4. Picture of pond from Andrew Doctor bench


Section 2: Pictures from the middle of the deck, across from the Lamp PostIMG_9993Picture 5: The lamp post around the middle of the two semi-circles on the deck            IMG_9994
Picture 6: Picture of the pond taken from the middle of semi-circle perpendicular to the Lamp Post. I am standing right next to the railing.


Section 3: Pictures from the BenchIMG_9995Picture 7.  Sitting on  the bench right across from the Handicapped sign (at the beginning of the semi-circle on the right)     IMG_9998   Picture 8 . Sitting on the bench

IMG_9996Picture 9  Taken from the bench     IMG_9997 Picture 10:  Of the deck sitting on the bench


Section 4: Pictures from the sign “Authorized Vehicle Only”IMG_0002Picture 11: Sign of Authorized vehicle near Mens Room
IMG_0003Picture 12.  White-barked Sycamore from there

 

Positions of the sun, the earth and the moon

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Position of the Sun during four seasons

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Between the December Solstice and March Equinox, night is longer than the day. On March Equinox, the length of day and night are the same. After March Equinox, days gets longer until June Solstice.

Again on the September Equinox, the day and night are of the same length. After September, the night gets longer until the December Solstice.

The word equinox is derived from the Latin equi, which means equal, and nox, which means night.

Both the equinoxes and solstices help shephard in the changing of the seasons.

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March or Spring or Vernal equinox

THE VERNAL equinox  marks the first day of spring.

On the date of the equinox, both day and night are almost the same length around the globe. Afterwards, the day is longer than the night.

The moment when day and night are exactly equal length is known as the equilux and occurs a few days before the equinox.


The Winter or December Solstice

The shortest day of the year marks the start of winter and is thus called the Winter Solstice. On this day, the north pole is tilted farthest away from the sun.


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Winter Solstice

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Vernal Equinox diagram

On Dec. 21, 2017, or Thursday, the sun will hug the horizon. For those of us in the Northern Hemisphere, it will seem to barely rise — hardly peeking above a city’s skyline or a forest’s snow-covered evergreens — before it swiftly sets.

For months, the orb’s arc across the sky has been slumping, shortening each day.

In New York City, for example, the sun will be in the sky for just over nine hours — roughly six hours less than in June at the summer solstice. The winter solstice marks the shortest day of the year, before the sun reverses course and climbs higher into the sky. (At the same time, places like Australia in the Southern Hemisphere mark the summer solstice, the longest day of the year.)

Today, Jan 21, is the shortest day of 2017 in New Jersey. Here is a picture of sunset at Edison, New Jersey at 4:33 PM.

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Super Blue Blood Moon

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What-is-a-Lunar-eclipse

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Figure 1.
A total lunar eclipse occurs when the moon moves directly behind the Earth’s shadow, or umbra, meaning it cannot receive any light from the Sun. Jan 31 is a special case of total lunar eclipse where the Earth is perfectly aligned between the Sun and the Moon and the moon is inside the umbra as shown in Figure 1. Note that a lunar eclipse can occur only the night of a full moon.

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Figure 1A. The Definition

What happened on Jan 31, 2018 during night was that the moon came closest to the earth thereby making it appear 14% larger and 30% brighter to people living in the hemisphere where it was night. Hence it was called the “Supermoon.”

And, since the moon appeared red it as also called the “Blood” moon.

Finally , since it was the second full moon of Januare, it was called the “blue” moon.

Adding all together, the event was called the Super Blue Blood Moon.


এমন ঘটনা সচরাচর দেখা যায় না!

একই মাসে দু’টি পূর্ণিমা। দ্বিতীয় পূর্ণিমায় (ব্লু মুন) চাঁদ ও পৃথিবী সব থেকে কাছাকাছি (সুপারমুন) এবং সেই দিনেই পূর্ণগ্রাস চন্দ্রগ্রহণ। এই ত্র্যহস্পর্শকে পশ্চিমী দুনিয়ায় বলে, ‘সুপার ব্লাড ব্লু মুন’। ১৯৮২ সালের ৩০ ডিসেম্বরের পরে ভারত-সহ এশিয়া থেকে এই ঘটনা দেখা গেল এই প্রথম।


What is a blood moon?

The term blood moon isn’t a scientific term but one coined colloquially. It refers to a total lunar eclipse because, when the moon is completely eclipsed it takes on a reddish colour.

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Of course this can happen only during night. During this eclipse, direct sunlight is completely blocked by the earth’s shadow. The only light that can be seen is refracted through the earth’s shadow, and this light looks red just like with the sunset.


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 Figure 2. The physics of super blue blood moon.

A super blue blood moon is seen over Los Angeles on Wednesday. (AP Photo/Richard Vogel)

Figure 3. The super blue blood moon on 1/31/2018

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Figure 4. Full moon in Bangkok on 31 Jan 2018: The super blue blood moon.

The Solar Eclipse

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Earth's distance to the Sun
Illustration of Earth’s distance to the Sun.


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Eclipses occur when a moon or planet moves into the shadow of another object. In the case of a solar eclipse, the moon comes in between the sun and the earth and completely blocks the sun from a viewer on earth as shown above. This obviously can happen during the day time when the sun is up. Note that you can view a solar eclipse only from a small part of the earth as it is far larger than the moon. From other parts you will get a partial view of the sun during the eclipse.

Also, because of how much larger the Earth is than the Moon and how distant the Moon is, a total solar eclipse only occurs over a narrow range of the Earth at any given time.


The Solar Eclipse


Total Solar Eclipse

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A total solar eclipse is one of the most spectacular sights on Earth, and one that’s eluded the continental United States for nearly a century. Due to the elliptical, inclined orbits of the Sun, Moon and Earth, alignments where the Moon’s shadow passes across the Earth’s surface are rare, occurring only approximately once a year. Because of how much larger the Earth is than the Moon and how distant the Moon is, a total solar eclipse only occurs over a narrow range of the Earth at any given time.

On August 21, 2017, the Great American Eclipse occured, with a path of totality cutting from the Oregon coast all the way to the edge of South Carolina, casting darkness over 14 states. Although similar eclipses repeat in cycles, the lower 48 states haven’t seen a total solar eclipse that’s gone coast-to-coast since 1918, which almost confirmed Einstein’s greatest theory to the entire world.

Total solar eclipse 1999 in France.

Total solar eclipse 1999 in France. (Luc Viatour, lucnix.be)


Image credit: Mir / RSA, 1999, of the Moon's shadow falling on Earth, during a total solar eclipse as seen from space.

Image credit: Mir / RSA, 1999, of the Moon’s shadow falling on Earth, during a total solar eclipse as seen from space.

Note that, if you are standing only in the dark part of the earth, you will experience a total solar eclipse, that is, the sun will be completely cut off from your view for a few minutes before it slowly starts emerging again.


Futere dates of solar eclipse

The continental United States experienced a solar eclipse  on August 21, 2017. But if you got clouded out thas time, don’t despair. Totality returns to the United States in 2024, and then again in 2045 and 2052. Although hotels, campgrounds, and special-event venues are already booked solid, there’s nothing to stop you from driving down to the path of totality the night before. Pack into your car, bring lots of water (and some food), and when totality does arrive, look for the Sun’s corona and stars during the key moments.

References

  1. https://www.forbes.com/sites/startswithabang/2017/08/04/americas-previous-coast-to-coast-eclipse-almost-proved-einstein-right/#4908013237c3

The Lunar Eclipse

lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow).  A lunar eclipse can occur only the night of a full moon.

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Within the central umbra shadow, the moon is totally shielded from direct illumination by the Sun. In contrast, within the penumbra shadow, only a portion of Sunlight is blocked.

Photograph of full moon during the total lunar eclipse of 28 September 2015.

See the Super Blue Blood moon

Summer Solstice At Stonehenge & Egypt

Go Back to Summer


Today, June 21st, is the first day of summer 2017. 

The summer solstice is generally understood to mark the first day of summer. The solstice is a time to recall the reverence and understanding early people had for the sky.
Some 5000 years ago, people placed huge stones in a circle on a broad plain in England and aligned them with the June solstice sunrise.

Around the same time Stonehenge was being constructed in England, two great pyramids and then the Sphinx were built on Egyptian sands.


In Egypt

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The Sun setting between two Pyramids on the first day of the Summer (Summer Solstice seen from the Sphinx)


At The Stonehenge

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Revelers watch as the sun rises over the standing stones at the prehistoric monument Stonehenge


Egyptian-Pyramids
Sphinx in the foreground with the pyramids in the background